Information processing that subserves conscious cognitive functions is thought to involve recurrent signaling through feedforward and feedback loops among hierarchically arranged functional regions of the cerebral cortex. In the current issue of Consciousness and Cognition, Lee et al. report that loss of consciousness, as produced by a bolus injection of the general anesthetic propofol to human volunteers, was accompanied by a decrease in wide-band EEG feedback connectivity from frontal cortex to parietal cortex, confirming a prediction from previous (...) experimental studies. Interestingly, frontoparietal feedback connectivity did not fully recover after the anesthetic effect wore off and the subjects first opened their eyes in response to a verbal command. Possible interpretations of the results and their implications with respect to the neural correlates of consciousness and unconsciousness are discussed. (shrink)

A ubiquitous feature of active sleep in mammals and birds is its relative abundance in early development. In rat pups across the first two postnatal weeks, active sleep promotes the expression of synchronized oscillatory activity within and between cortical and subcortical sensorimotor structures. Sensory feedback from self-generated myoclonic twitches – which are produced exclusively during active sleep – also triggers neural oscillations in those structures. We have proposed that one of the functions of active sleep in early infancy is (...) to provide a context for synchronizing developing structures. Specifically, neural oscillations contribute to a variety of neurodevelopmental processes, including synapse formation, neuronal differentiation and migration, apoptosis, and the refinement of topographic maps. In addition, synchronized oscillations promote functional connectivity between distant brain areas. Consequently, any condition or manipulation that restricts active sleep can, in turn, deprive the infant animal of substantial sensory experience, resulting in atypical developmental trajectories. The synchronization of rhythmic neural activity across brain structures provides evidence of communication. In developing sensorimotor networks, such oscillations are triggered most clearly and prominently during REM sleep. We propose that REM sleep provides a context for the emergence and expression of functional connectivity in the developing sensorimotor system. (shrink)

I examine four core aspects of WEAVER ++. The necessity for lemmas is often overstated. A model can incorporate interaction between levels without feedback connections between them. There is some evidence supporting the absence of inhibition in the model. Connectionist modelling avoids the necessity of a nondecompositional semantics apparently required by the hypernym problem.

Neurofeedback is a complex learning scenario, as the task consists of trying out mental strategies while processing a feedback signal that signifies activation in the brain area to be self-regulated and acts as a potential reward signal. In an attempt to dissect these subcomponents, we obtained whole-brain networks associated with efficient self-regulation in two paradigms: parallel, where the task was performed concurrently, combining feedback with strategy execution; and serial, where the task was performed consecutively, separating feedback processing (...) from strategy execution. Twenty participants attempted to control their anterior midcingulate cortex using functional magnetic resonance imaging NF in 18 sessions over 2 weeks, using cognitive and emotional mental strategies. We analyzed whole-brain fMRI activations in the NF training runs with the largest aMCC activation for the serial and parallel paradigms. The equal length of the strategy execution and the feedback processing periods in the serial paradigm allows a description of the two task subcomponents with equal power. The resulting activation maps were spatially correlated with functionally annotated intrinsic connectivity brain maps. Brain activation in the parallel condition correlates with the basal ganglia network, the cingulo-opercular network, and the frontoparietal control network ; brain activation in the serial strategy execution condition with the default mode network, the FPCN, and the visual processing network; while brain activation in the serial feedback processing condition predominantly with the CON, the DMN, and the FPCN. Additional comparisons indicate that BG activation is characteristic to the parallel paradigm, while supramarginal gyrus and superior temporal gyrus activations are characteristic to the serial paradigm. The multifaceted view of the subcomponents allows describing the cognitive processes associated with strategy execution and feedback processing independently in the serial feedback task and as combined processes in the multitasking scenario of the conventional parallel feedback task. (shrink)

Frontoparietal connectivity has been suggested to be important in conscious processing and its interruption is thought to be one mechanism of general anesthesia. Data in animals demonstrate that feedforward processing of information may persist during the anesthetized state, while feedback processing is inhibited. We investigated the directionality and functional organization of frontoparietal connectivity in 10 human subjects anesthetized with propofol on two separate occasions. Multichannel electroencephalography and a computational method of assessing directed functional connectivity were employed. (...) We demonstrate that directed feedback connectivity is diminished with loss of consciousness and returns with responsiveness to verbal command. We also applied the Dendrogram classification method to assess the global organization of directed functional connectivity during consciousness and anesthesia. We demonstrate a state-specific hierarchy and subject-specific subhierarchy in functional organization. These data support the hypothesis that specific states of human consciousness are defined by specific states of frontoparietal connectivity. (shrink)

The introduction of statistical models represented by directed acyclic graphs (DAGs) has proved fruitful in the construction of expert systems, in allowing efficient updating algorithms that take advantage of conditional independence relations (Pearl, 1988, Lauritzen et al. 1993), and in inferring causal structure from conditional independence relations (Spirtes and Glymour, 1991, Spirtes, Glymour and Scheines, 1993, Pearl and Verma, 1991, Cooper, 1992). As a framework for representing the combination of causal and statistical hypotheses, DAG models have shed light on a (...) number of issues in statistics ranging from Simpson’s Paradox to experimental design (Spirtes, Glymour and Scheines, 1993). The relations of DAGs with statistical constraints, and the equivalence and distinguishability properties of DAG models, are now well understood, and their characterization and computation involves three properties connecting graphical structure and probability distributions: (i) a local directed Markov property, (ii) a global directed Markov property, (iii) and factorizations of joint densities according to the structure of a graph (Lauritizen, et al., 1990). (shrink)

The processing of time intervals in the sub- to supra-second range by the brain is critical for the interaction of primates with their surroundings in activities, such as foraging and hunting. For an accurate processing of time intervals by the brain, representation of physical time within neuronal circuits is necessary. I propose that time dimension of the physical surrounding is represented in the brain by different types of neuronal oscillators, generating spikes or spike bursts at regular intervals. The proposed oscillators (...) include the pacemaker neurons, tonic inputs, and synchronized excitation and inhibition of inter-connected neurons. Oscillators, which are built inside various circuits of brain, help to form modular clocks, processing time intervals or other temporal characteristics specific to functions of a circuit. Relative or absolute duration is represented within neuronal oscillators by “neural temporal unit,” defined as the interval between regularly occurring spikes or spike bursts. Oscillator output is processed to produce changes in activities of neurons, named frequency modulator neuron, wired within a separate module, represented by the rate of change in frequency, and frequency of activities, proposed to encode time intervals. Inbuilt oscillators are calibrated by (a) feedback processes, (b) input of time intervals resulting from rhythmic external sensory stimulation, and (c) synchronous effects of feedback processes and evoked sensory activity. A single active clock is proposed per circuit, which is calibrated by one or more mechanisms. Multiple calibration mechanisms, inbuilt oscillators, and the presence of modular connections prevent a complete loss of interval timing functions of the brain. (shrink)

We performed an EEG graph analysis on data from 31 typical readers (22.27 ± 2.53 y/o) and 24 dyslexics (22.99 ± 2.29 y/o), recorded while they were engaged in an audiovisual task and during resting-state. The task simulates reading acquisition as participants learned new letter-sound mappings via feedback. EEG data was filtered for the delta (0.5–4 Hz), theta (4–8 Hz), alpha (8–13 Hz), and beta (13–30 Hz) bands. We computed the Phase Lag Index (PLI) to provide an estimate of (...) the functional connectivity between all pairs of electrodes per band. Then, networks were constructed using a Minimum Spanning Tree (MST), a unique sub-graph connecting all nodes (electrodes) without loops, aimed at minimizing bias in between groups and conditions comparisons. Both groups showed a comparable accuracy increase during task blocks, indicating that they correctly learned the new associations. The EEG results revealed lower task-specific theta connectivity, and lower theta degree correlation over both rest and task recordings, indicating less network integration in dyslexics compared to typical readers. This pattern suggests a role of theta oscillations in dyslexia and may reflect differences in task engagement between the groups, although robust correlations between MST metrics and performance indices were lacking. (shrink)

Early food regimes literature tended to concentrate on the global scale analysis of implicitly negative trends in global food relations. In recent years, early food regimes authors like Harriet Friedmann and Philip McMichael have begun to consider the sites of resistance, difference and opportunity that have been emerging around, and into contestation with, new food regime relations. This paper examines the emerging global-scale governance mechanism of environmental food auditing—particularly those being promoted by supermarkets and other large food retailers—as an important (...) new dynamic in our understanding of the politics and potentials of food regimes. Commencing with an examination of Friedmann’s corporate environmental food regime, two key dynamics are identified as being pivotal in the rise and decline of global-scale regimes: securing social legitimacy for food relations and the importance of ecological dynamics in global food relations. By extending McMichael’s notion of ‘Food from Nowhere’ versus ‘Food from Somewhere’, the paper interrogates the emergence of a cluster of relations that comprise ‘Food from Somewhere’ and examines whether this cluster of relations has the potential to change some of the constituent ecological dynamics of food regimes. These ecological dynamics have historically been problematic, amply demonstrating Marx’s metabolic rift as the early food regimes solidified relationships between ‘ecologies at a distance’. By using socio-ecological resilience theory, ‘Food from Somewhere’ is characterized as having denser ecological feedbacks and a more complex information flow in comparison to the invisibility and distanciation characterizing earlier regimes as well as contemporary ‘Food from Nowhere’. The conclusion of this article is that while ‘Food from Somewhere’ does provide one site of opportunity for changing some key food relations and ecologies, the social legitimacy of this new form of food relations does rely on the ongoing existence of the opposite, more regressive, pole of world food relations. The key question for resolving this tension appears to be whether new food relations can open up spaces for future, more ecologically connected, global-scale food relations. (shrink)

The aim of this paper is to explore how children learn to form new relationships with nature. It draws on a longitudinal case study of children participating in a stewardship project involving the conservation of salamanders during the school day in Stockholm, Sweden. The qualitative method includes two waves of data collection: when a group of 10-year-old children participated in the project (2015) and two years after they participated (2017). We conducted 49 interviews with children as well as using participant (...) observations and questionnaires. We found indications that children developed sympathy for salamanders and increased concern and care for nature, and that such relationships persisted two years after participation. Our rich qualitative data suggest that whole situations of sufficient unpredictability triggering free exploration of the area, direct sensory contact and significant experiences of interacting with a species were important for children’s development of affective relationships with the salamander species and with nature in an open-ended sense. Saving the lives of trapped animals enabled direct sensory interaction, feedback, increased understanding, and development of new skills for dynamically exploring further ways of saving species in an interactive process experienced as deeply meaningful, enjoyable and connecting. The behavioural setting instilled a sense of pride and commitment, and the high degree of responsibility given to the children while exploring the habitat during authentic situations enriched children’s enjoyment. The study has implications for the design of education programmes that aim to connect children with nature and for a child-sensitive urban policy that supports authentic nature situations in close spatial proximity to preschools and schools. (shrink)

Neurophysiological investigations of the visual system by way of single-cell recordings have revealed a hierarchical architecture in which lower level areas, such as the primary visual cortex, contain cells that respond to simple features, while higher level areas contain cells that respond to higher order features apparently composed of combinations of lower level features. This architecture seems to suggest a feed-forward processing strategy in which visual information progresses from lower to higher visual areas. However there is other evidence, both neurophysiological (...) and phenomenal, that suggests a more parallel processing strategy in biological vision, in which top-down feedback plays a significant role. In fact Gestalt theory suggests that visual perception involves a process of emergence, i.e. a dynamic relaxation of multiple constraints throughout the system simultaneously, so that the final percept represents a stable state, or energy minimum of the dynamic system as a whole. A Multi-Level Reciprocal Feedback (MLRF) model is proposed to resolve the apparently contradictory concepts, by proposing a hierarchical visual architecture whose different levels are connected by bi-directional feed-forward and feedback pathways, where the computational transformation performed by the feedback pathway between levels in the hiararchy is a kind of inverse of the transformation performed by the corresponding feed-forward processing stream. This alternative paradigm of perceptual computation accounts in general terms for a number of visual illusory effects, and offers a computational specification for the generative, or constructive aspect of perceptual processing revealed by Gestalt theory. (shrink)

This paper reports from an ongoing multidisciplinary, ethnographic study that is exploring the views, values and practices (the ethical frameworks) drawn on by professional staff in assisted conception units and stem cell laboratories in relation to embryo donation for research purposes, particularly human embryonic stem cell (hESC) research, in the UK. We focus here on the connection between possible incidental findings and the circumstances in which embryos are donated for hESC research, and report some of the uncertainties and dilemmas of (...) our staff participants. We explore the views of our study participants in relation to two themes: (1) rights to information and anticipating how donors might be informed about future research findings and (2) occupational work goals and trust. (shrink)

Human vision briefly retains a trace of a stimulus after it disappears. This trace—iconic memory—is often believed to be a surrogate for the original stimulus, a representational structure that can be used as if the original stimulus were still present. To investigate its nature, a flicker-search paradigm was developed that relied upon a full scan (rather than partial report) of its contents. Results show that for visual search it can indeed act as a surrogate, with little cost for alternating between (...) visible and iconic representations. However, the duration over which it can be used depends on the type of task: some tasks can use iconic memory for at least 240 ms, others for only about 190 ms, while others for no more than about 120 ms. The existence of these different limits suggests that iconic memory may have multiple layers, each corresponding to a particular level of the visual hierarchy. In this view, the inability to use a layer of iconic memory may reflect an inability to maintain feedback connections to the corresponding representation. (shrink)

Recent developments in psychology and neuroscience suggest away to link the mental phenomenon of visual awareness with specific neural processes. Here, it is argued that the feed-forward activation of cells in any area of the brain is not sufficient to generate awareness, but that recurrent processing, mediated by horizontal and feedback connections is necessary. In linking awareness with its neural mechanisms it is furthermore important to dissociate phenomenal awareness from visual attention or decision processes.

The detection and categorization of animate motions is a crucial task underlying social interaction and perceptual decision making. Neural representations of perceived animate objects are partially located in the primate cortical region STS, which is a region that receives convergent input from intermediate-level form and motion representations. Populations of STS cells exist which are selectively responsive to specific animated motion sequences, such as walkers. It is still unclear how and to what extent form and motion information contribute to the generation (...) of such representations and what kind of mechanisms are involved in the learning processes. The article develops a cortical model architecture for the unsupervised learning of animated motion sequence representations. We demonstrate how the model automatically selects significant motion patterns as well as meaningful static form prototypes characterized by a high degree of articulation. Such key poses are selectively reinforced during learning through a cross talk between the motion and form processing streams. Furthermore, we show how sequence-selective representations are learned in STS by fusing static form and motion input from the segregated bottom-up driving input streams. Cells in STS, in turn, feed their activities recurrently to their input sites along top-down signal pathways. We show how such learned feedback connections enable predictions about future input as anticipation generated by sequence-selective STS cells. Network simulations demonstrate the computational capacity of the proposed model by reproducing several experimental findings from neurosciences and by accounting for recent behavioral data. (shrink)

Introduction. Developing human potential, improving the population’s life quality of the regions are the unconditional priorities of the regional socio-economic policy. The implementation of such priorities requires an objective assessment of the existing socio-economic situation of the Russian Federation’s constituent entities, an analysis of the conditions for regional development, a search for economic growth drivers, and the development of effective mechanisms for implementing priorities. The designated issues are in the area of scientists’ and specialists’ close attention, whose range of scientific (...) research and applied practices is constantly replenished. In this regard, the article expands the understanding of the complexity of the regions’ socio-economic and technological development, and various aspects of the processes of regional development are considered on the basis of the proposed model, the essence of which is represented by the triad “conditions-factors-results”. Within the framework of the proposed triad, «conditions» were determined by the socio-economic situation of the region, scientific, technological and digital «factors» were considered as drivers of development; and “results” were investigated through social parameters that reflect the level of human development. Taking into account the importance of achieving social results in the framework of technological development, studies aimed at studying the interdependence of the processes of technological transformation and human development seem to be very timely and relevant. Purpose. Reveal the mutual influence of the scientific and technical potential and the level of digitalization of the territory, as factors of socio-economic development, on the human potential of the region. Methods. For the study, a statistical analysis was used based on data from Rosstat, Moscow School of Management Skolkovo, RIA Rating; correlation analysis; methods of comparative analysis, rating, grouping and positioning of regions. The scientific novelty of the research consists in the developed model of regional development, the content of which is described by the triad “conditions-factorsresults”. The conditions of regional development are considered as opportunities to achieve the set goal, factors - as catalysts for technological development of territories, results - as an increase in human potential. At the same time, the model has reproductive characteristics, since it provides for direct and feedback connections, namely: the achieved «results» affect and change the «conditions» that form the updated «factors», which in turn generate new «results». The resulting cumulative effect of the technological development of the regions is converted into the strengthening and development of human potential. Results and Conclusions. The authors conducted a study on the influence of integral indicators of the socioeconomic situation of regions, the level of scientific and technical potential and digitalization on the human development index of the regions of the Ural and Siberian federal districts. The comparison of the regions was carried out both separately for each federal district and jointly for all regions of the two districts. The grouping and positioning of regions in the study of the triad «conditions-factors-results» made it possible to identify the strongest regions where a favorable socio-economic situation, high digital and scientific and technical potential contribute to the development of human potential. In contrast, less prosperous regions (from the standpoint of conditions and factors of technological development) are not capable of a technological breakthrough and are limited in their impact on human potential. The unevenness of digital development and the scientific and technical potential of the regions was established, and the leading regions and outsider regions characterized by unequal opportunities for technological development were identified. The positioning of the regions made it possible to identify groups for which measures are needed to expand opportunities for technological development. The influence of the level of digitalization and scientific and technical potential on the human development index was established, which made it possible to identify regions, one of which is advisable to be included in interregional interaction (partnerships) to enhance the use of their specific capabilities, while others - to overcome the lag in the studied areas of development. (shrink)

Clinical and experimental evidence suggests that hippocampal damage causes more severe disruption of episodic memories if those memories were encoded in the recent rather than the more distant past. This decrease in sensitivity to damage over time might reflect the formation of multiple traces within the hippocampus itself, or the formation of additional associative links in entorhinal and association cortices. Physiological evidence also supports a two-stage model of the encoding process in which the initial encoding occurs during active waking and (...) deeper consolidation occurs via the formation of additional memory traces during quiet waking or slow-wave sleep. In this article I will describe the changes in cholinergic tone within the hippocampus in different stages of the sleep-wake cycle and will propose that these changes modulate different stages of memory formation. In particular, I will suggest that the high levels of acetylcholine that are present during active waking might set the appropriate dynamics for encoding new information in the hippocampus, by partially suppressing excitatory feedback connections and so facilitating encoding without interference from previously stored information. By contrast, the lower levels of acetylcholine that are present during quiet waking and slow-wave sleep might release this suppression and thereby allow a stronger spread of activity within the hippocampus itself and from the hippocampus to the entorhinal cortex, thus facilitating the process of consolidation of separate memory traces. (shrink)

Conceptual knowledge is acquired through recurrent experiences, by extracting statistical regularities at different levels of granularity. At a fine level, patterns of feature co-occurrence are categorized into objects. At a coarser level, patterns of concept co-occurrence are categorized into contexts. We present and test CONCAT, a connectionist model that simultaneously learns to categorize objects and contexts. The model contains two hierarchically organized CALM modules (Murre, Phaf, & Wolters, 1992). The first module, the Object Module, forms object representations based on co-occurrences (...) between features. These representations are used as input for the second module, the Context Module, which categorizes contexts based on object co-occurrences. Feedback connections from the Context Module to the Object Module send activation from the active context to those objects that frequently occur within this context. We demonstrate that context feedback contributes to the successful categorization of objects, especially when bottom-up feature information is degraded or ambiguous. (shrink)

Albert Newen and Petra Vetter argue that neurophysiological considerations and psychophysical studies provide striking evidence for cognitive penetration. This commentary focuses mainly on the neurophysiological considerations, which have thus far remained largely absent in the philosophical debate concerning cognitive penetration, and on the cognitive penetration of perceptual experiences, which is the form of cognitive penetration philosophers have debated about the most. It is argued that Newen and Vetter's evidence for cognitive penetration is unpersuasive because they do not sufficiently scrutinize the (...) details of the empirical studies they make use of-the details of the empirical studies are crucial also when the studies are used in philosophical debates. The previous does not mean that cognitive penetration could not occur. Quite the contrary, details of the feedback connections to the visual perceptual module and one of the candidates presented by Newen and Vetter suggest that cognitive penetration can occur in rare cases. (shrink)

Network motifs are small patterns of connections, found over‐represented in gene regulatory networks. An example is the negative feedback loop (e.g. factor A represses itself). This opposes its own state so that when ‘on’ it tends towards ‘off’ – and vice versa. Here, we argue that such self‐opposition, if considered dimensionlessly, is analogous to the liar paradox: ‘This statement is false’. When ‘true’ it implies ‘false’ – and vice versa. Such logical constructs have provided philosophical consternation for over 2000 (...) years. Extending the analogy, other network topologies give strikingly varying outputs over different dimensions. For example, the motif ‘A activates B and A. B inhibits A’ can give switches or oscillators with time only, or can lead to Turing‐type patterns with both space and time (spots, stripes or waves). It is argued here that the dimensionless form reduces to a variant of ‘The following statement is true. The preceding statement is false’. Thus, merely having a static topological description of a gene network can lead to a liar paradox. Network diagrams are only snapshots of dynamic biological processes and apparent paradoxes can reveal important biological mechanisms that are far from paradoxical when considered explicitly in time and space. (shrink)

Under what conditions are material objects, such as particles, parts of a whole object? This is the composition question and is a longstanding open question in philosophy. Existing attempts to specify a non-trivial restriction on composition tend to be vague and face serious counterexamples. Consequently, two extreme answers have become mainstream: composition (the forming of a whole by its parts) happens under no or all conditions. In this paper, we provide a self-contained introduction to the integrated information theory of consciousness (...) (IIT). We show that IIT specifies a non-trivial restriction on composition: composition happens when integrated information is maximized. We compare the IIT-restriction to existing proposals and argue that the IIT-restriction has significant advantages, especially in response to the problems of vagueness and counterexamples. An appendix provides an introduction to calculating parts and wholes with a simple system. (shrink)

A self-fulfilling prophecy is, roughly, a prediction that brings about its own truth. Although true predictions are hard to fault, self-fulfilling prophecies are often regarded with suspicion. In this article, we vindicate this suspicion by explaining what self-fulfilling prophecies are and what is problematic about them, paying special attention to how their problems are exacerbated through automated prediction. Our descriptive account of self-fulfilling prophecies articulates the four elements that define them. Based on this account, we begin our critique by showing (...) that typical self-fulfilling prophecies arise due to mistakes about the relationship between a prediction and its object. Such mistakes—along with other mistakes in predicting or in the larger practical endeavor—are easily overlooked when the predictions turn out true. Thus we note that self-fulfilling prophecies prompt no error signals; truth shrouds their mistakes from humans and machines alike. Consequently, self-fulfilling prophecies create several obstacles to accountability for the outcomes they produce. We conclude our critique by showing how failures of accountability, and the associated failures to make corrections, explain the connection between self-fulfilling prophecies and feedback loops. By analyzing the complex relationships between accuracy and other evaluatively significant features of predictions, this article sheds light both on the special case of self-fulfilling prophecies and on the ethics of prediction more generally. (shrink)

Perceptual filling-in for vision is the insertion of visual properties (e.g., color, contour, luminance, or motion) into one’s visual field, when those properties have no corresponding retinal input. This paper introduces and provides preliminary empirical support for filled/non-filled pairs, pairs of images that appear identical, yet differ by amount of filling-in. It is argued that such image pairs are important to the experimental testing of theories of consciousness. We review recent experimental research and conclude that filling-in involves brain activity with (...) relatively high integrated information (Phi) compared to veridical visual perceptions. We then present filled/non-filled pairs as an empirical challenge to the integrated information theory of consciousness, which predicts that phenomenologically identical experiences depend on brain processes with identical Phi. (shrink)

Mainstream forms of psychiatric talk therapy and cognitive behavioral therapy (CBT) do not reliably generate lasting recovery for eating disorders. We discuss widespread assumptions regarding the nature of eating disorders as fundamentally psychological disorders and highlight the problems that underlie these notions, as well as related practical problems in the implementation of mainstream treatments. We then offer a theoretical and practical alternative: a dynamical systems model of eating disorders in which behavioral interventions are foregrounded as powerful mediators between psychological and (...) physical states. We go on to present empirical evidence for behavioral modification specifically of eating speed in the treatment of eating disorders, and a hypothesis accounting for the etiology and progression, as well as the effective treatment, of the full spectrum of eating problems. A dynamical systems approach mandates that in any dietary and lifestyle change as profound as recovery from an eating disorder, acknowledgment must be made of the full range of pragmatic (psychological, cultural, social, etc.) factors involved. However, normalizing eating speed may be necessary if not sufficient for the development of a reliable treatment for the full spectrum of eating disorders, in its role as a mediator in the complex feedback loops that connect the biology and the psychology with the behaviors of eating. (shrink)

While robot-assisted arm and hand training after stroke allows for intensive task-oriented practice, it has provided only limited additional benefit over dose-matched physiotherapy up to now. These rehabilitation devices are possibly too supportive during the exercises. Neurophysiological signals might be one way of avoiding slacking and providing robotic support only when the brain is particularly responsive to peripheral input. We tested the feasibility of three-dimensional robotic assistance for reach-to-grasp movements with a multi-joint exoskeleton during motor imagery-related desynchronization of sensorimotor oscillations (...) in the β-band only. We also registered task-related network changes of cortical functional connectivity by electroencephalography via the imaginary part of the coherence function. Healthy subjects and stroke survivors showed similar patterns – but different aptitudes – of controlling the robotic movement. All participants in this pilot study with nine healthy subjects and two stroke patients achieved their maximum performance during the early stages of the task. Robotic control was significantly higher and less variable when proprioceptive feedback was provided in addition to visual feedback, i.e. when the orthosis was actually attached to the subject’s arm during the task. A distributed cortical network of task-related coherent activity in the θ-band showed significant differences between healthy subjects and stroke patients as well as between early and late periods of the task. Brain-robot interfaces may successfully link three-dimensional robotic training to the participants’ efforts and allow for task-oriented practice of activities of daily living with a physiologically controlled multi-joint exoskeleton. Changes of cortical physiology during the task might also help to make subject-specific adjustments of task difficulty and guide adjunct interventions to facilitate motor learning for functional restoration. (shrink)

El vídeo fue considerado por Gene Youngblood (1979) como un nuevo medio de creación artística, cuyos códigos abrirán nuevas perspectivas a la imagen en movimiento dándole entidad estética propia. Se analiza diversas teorías relacionadas con la comunicación y el arte de autores como Wiener, Benjamin, Brecht, McLuhan, Burris. Así mismo estudia obras pioneras y el uso del feedback loop como elemento de retroalimentación entre emisor receptor. Wipe Cycle (1969) de Frank Gillette e Ira Schneider y Time Delay Room (1974) (...) de Dan Graham nos mostrarán las claves para entender el funcionamiento interno de un nuevo medio que acababa de nacer. (shrink)

Overcoming the ecological, economic, and military-political crisis in which the modern world is located is possible on the path of human development and the creation of a new quality of social relations, expressed in a free consolidated productive interaction between individuals. Such liberalization and decentralization of the political, economic and cultural life of society is achieved through self-organization of society “from below”, when individuals and their groups, through discourse, find understanding in establishing the rules of interaction in society. Decentralization is (...) possible in a society of equal, active and morally responsible individuals who mutually respect each other and ensure stability and consolidation of people through common aspirations (Allen Mendenhall). Individuals and communities achieve a balance of self-interest in order to coordinate actions in the interests of society voluntarily, and not under the influence of institutional violence. Decentralization creates a competitive environment in which a pluralistic approach makes it possible to harmonize the interests and values of interacting social Subjects in order to optimize social relations and improve the lives of individuals and society as a whole. Totalitarian political regimes support centralization and strict universalism in the application of legal norms, generate political and economic polarization of their own societies, interfere in the internal affairs of other societies, and the best way to overcome such regimes is their decentralization. Optimal for understanding the meaning and implementation of decentralization of society is a pragmatist approach, which is well aligned with the concept of self-organization of society. The pragmatist approach with its empirical intentions focuses on the practical verification and implementation of knowledge through information feedback, which is a universal regularity of natural and social self-organizing polycentric processes. In social systems, informational feedback at certain developed levels of social self-organization has a reflexive nature. An important component of the regulation of human social actions is ethical reflection, which aligns these actions with both its current needs and the strategic values of society. Decentralization is one of the effective ways to strengthen self-organizing network connections in society, increase creative activity and well-being of citizens, harmonize social relations and reduce the level of antagonistic tension in society, which reduces the likelihood of aggressive wars. (shrink)

Abstractabstract:This article examines the connections between social perfectibility and individual identity through George Orwell's famous non-place "Oceania" in 1984 (1949). It is argued that "Ingsoc" Party members see reality filtered through "collective solipsism," which is a mirage that is superimposed upon the material state of affairs in individual perception by the augmentation of every individual's environment with constant feedback from the social superstructure. Thus, perceptions, memories, and possibly even personalities are constructed situationally as fit for the superstructure. Due to (...) the constantly intensifying regress of cognitive and material enabling factors, this "collective delusion" will detach itself from the material realm completely in 2050 when individual consciousness fully dissolves into Big Brother's super-mind. 1984 thus depicts a dystopian-utopian, "blackwhite" society on the "event horizon" to a "singularity," which will emerge when the state or collective becomes an absolute and no traces of private life remain. (shrink)

Sir Andrew Witty’s pivotal 2013 report (Witty, Encouraging a British invention revolution: Sir Andrew Witty’s review of universities and growth. Final Report and Recommendations, 2013) identified that universities have an extraordinary potential to enhance economic growth, and that much of this growth will come from small-to-medium enterprises (SMEs). The report noted that whilst they offer SMEs substantial benefits, many universities lack resources for external engagement. I argue that larger universities do contribute to this narrative but are driven by strong research (...) agendas and typically work with larger companies nationally and internationally. They are not particularly accessible to SMEs.This chapter discusses the impact that a small university can have on the regional economy in which it operates, and argues that smaller universities can be more focused on local need, especially in relation to supporting small businesses. It is presented within the context of the development of the University of Chichester Business School over the last 20 years; the successes and the challenges that had to be overcome. The University and the Business School is an example of an anchor institution, like many other small universities, embedded in their local economies, acting as facilitators at the heart of a network of open innovation, connecting supply chains, education establishments, local government and businesses.The importance of building long-term relationships is explored and illustrated with feedback from interviews with key stakeholders in the regional economy. (shrink)

he 4th Industrial Revolution introduced a highly automated and connected business environment. Nevertheless, many organizations are reeling in the wake of the speed and severity of the COVID-19 pandemic's impact, catching many unawares, and placing their sustainability in question. Given the connectedness promulgated by the 4th Industrial Revolution, one might expect organizational resilience to be a given - only time will tell whether this was the case. This article considers the concept of cybernetics as contributing to systems-thinking, which may enable (...) resilience strategies to come to fruition. Cybernetics is a goal-driven approach in which constant feedback is analyzed and applied in correcting the current course. We reflect on the roots and principles of the cybernetic concept, developing it into a management cybernetics concept. We take a non-technological approach in acknowledging organizations as systems. Management theories such as stakeholder and stewardship theories are systems components that can play a crucial role in effectively communicating management information within the cybernetic loop. We conclude that an integrative and cooperative relationship with legitimate stakeholders can play an essential role in an organization's preparedness. (shrink)

Social media has witnessed different eating practices, including food mukbang. Food mukbang is a type of video presentation where hosts consume large quantities of food while interacting with viewers. This study is situated on the social eating theory, which explains how people connect their individual interests with society. Though this practice has been on social media platforms for a while now, little is known about its health impact on a wide range of audiences. Unhealthy eating practices are associated with obesity (...) and other chronic diseases, which are the leading causes of death in the world today. Given that there are unhealthy eating practices in food mukbang videos on social media, we collected thirty (30) food mukbang creative common license YouTube videos, and we extracted 2297 comments from these videos to study the trends. In view of this, we found that there is a collection of more unhealthy foods eaten to entertain viewers, different unhealthy eating behaviors such as eating quickly, talking while eating, and putting too much food in the mouth. In addition, we found that the viewers’ sentiments were positive, and they loved watching these videos. Hence, in its best practice, we propose an AI-driven persuasive intervention because AI technologies are capable of detecting unhealthy eating patterns and persuasive interventions can promote a change in behavior (healthy eating behavior). Based on our findings, we present three design recommendations for YouTube and other social media designers to consider in future: (1) using artificial intelligence-related technologies for predicting videos, (2) using natural language processing to prompt feedback, and (3) auto-generating disclaimers at the beginning and end of the video. (shrink)

This study aimed to explore practices and strategies that have successfully reduced time-to-proficiency of the workforce in large multinational organisations and develop a model based on them. The central research question of this study was: How can organisations accelerate time-to-proficiency of employees in the workplace? The study addressed three aspects: the meaning of accelerated proficiency, as seen by business leaders; the business factors driving the need for shorter time-to-proficiency and benefits accrued from it; and practices and strategies to shorten time-to-proficiency (...) of the workforce. 85 participants (n=85) from 7 countries who represented 10 economic sectors, 20 business sectors and 28 industry groups contributed 66 successful bounded project cases. A qualitative research approach was used. Data were collected through in-depth interviews with project leaders and by collecting additional project case documents. Data were analysed using thematic analysis to identify the themes in the data. Matrix analysis was then used to perform within-case and cross-case analysis to compare the project cases. 11 overarching themes were developed from the data analysis, out of which two overarching themes explained the characteristics of job-role proficiency and accelerated proficiency, while three overarching themes described the magnituide and scale of time-to-proficiency business problem, business drivers for accelerating proficiency and business benefits of reduced time-to-proficiency. Six overarching themes revealed the business practices employed by organisations to reduce time-to-proficiency: (1) Defining business-driven proficiency measures in terms of expected business outcomes from a job role; (2) Developing a proficiency reference map of all the inputs, conditions and roadblocks that determine or influence how required business outcomes are being produced in a job role; (3) Sequencing an efficient proficiency path of activities and experiences ordered to produce the desired business outcomes in the shortest possible time; (4) Manufacturing accelerated contextual experiences by leveraging on-the-job opportunities or training interventions in a compressed time-frame; (5) Promoting an active emotional immersion through engagements, consequences, stakes, feedback and proficiency assessments; and (6) Setting up a proficiency eco-system, providing timely support to performers while doing the job such as enabling job environment, highly involved manager, structured mentoring from experts, purposeful social connectivity with peers, leveraging subject matter experts and on-demand performance support systems. Organisations orchestrated these six business practices as an input-output-feedback system to reduce time-to-proficiency of the workforce. A conceptual model (Accelerated Proficiency Model) was developed representing interactions among six business-level practices/processes as a closed-loop system to explain the concept and process of accelerated proficiency in the workplace. These practices were implemented through a set of twenty-four strategies proven successful in various contexts. The strategies employed were much beyond the boundaries of conventional training interventions. The job itself acted as the primary mechanism to accelerate proficiency. A two-level hierarchical framework (6/24 framework of strategies) was also constructed in the form of a checklist consisting of six practices and twenty-four strategies for practitioners. Overall, the findings of this research study contribute significantly to the body of knowledge on accelerated proficiency. In particular, the conceptual model and the framework developed in this study can be implemented across a range of contexts, business sectors, job types and settings to reduce time-to-proficiency of the workforce. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Could Understanding Harm?Iskra Fileva, PhD (bio) and Linda A.W. Brakel, MD (bio)We would like to thank the editors for organizing this symposium and our commentators—Marga Reimer and James Phillips—for the thought-provoking feedback. Although we had thought about the ideas we discuss from many different angles, our commentators raised several interesting issues we had not considered. We are grateful for the opportunity to continue the conversation.Reply to ReimerAs Professor (...) Reimer notes, we advocate an approach to self-constitution that we dub “understanding first.” On this approach, non-moral and non-normative understanding of the origin of maladaptive traits must precede moral evaluation and attempts to free oneself—or as we say “prune”—undesirable traits. Professor Reimer presents several interesting cases meant both to extend and test the limits of our proposal. We appreciate this approach and respond to each case in turn.Genes and AlcoholismSuppose Alejandro, an adult raised by adoptive parents, struggles with alcohol addiction. He learns that his biological parents died of alcoholic liver disease and comes to believe that his alcohol problem is caused by a genetic propensity toward alcohol abuse. One can ask: “Does an understanding first approach have the potential to undermine the sense of agency that is necessary for the effective treatment of maladaptive traits?”Answer: It can be explained to Alejandro that genetic proclivities are just that—proclivities—that can be overridden. In fact, behavior can alter our very genes—although not at the sequence level— changes known as “epigenetic.” And the liver disease of the biological parents can serve as a cautionary tale. If even in light of these considerations, Alejandro’s tendency to see genetic propensities as deterministic persists, it is worth asking why. There is no evidence that “genes are destiny,” so the disposition to see them that way must have a psychological explanation. What is the explanation? A self-destructive desire? Fear of freedom? This exploration can itself be empowering. [End Page 211]Adaptive ForgettingSuppose Beata, who has an eating disorder, was molested by her own father when she was a child. Subsequently, her father shot himself and now she has no recollection of the molestation. However, Beata’s eating disorder is largely a result of those experiences. It is quite possible that if Beata were to recall being molested, that would do more harm than good. In this connection, one can ask together with Reimer: “Does an understanding first approach have the potential to undermine an adaptive ‘forgetting’ of root causes of maladaptive traits?”Answer: Here, understanding the history, instead of forgetting it, might allow Beata to gain insight into and empathize with possible motives that may have led to becoming obese. For example, she might have the phantasy that if she had been obese and unattractive, she could have prevented the molestation—hence, become that way now to prevent it from happening again, and more wishfully reverse it. (In unconscious goings-on time is thought to be in the “unexamined present” (Brakel 2009, p. 63; 2015, p. 131; 2022, p. 4; 2023, p. 404.) One benefit of this is that in gaining this type of recognition, Beata might find it easier to change her behavior that she otherwise would not have; it was never her responsibility to prevent her own molestation, and there is no reason whatsoever for her to now make herself unattractive to her deceased father, and very little reason to remain obese in an attempt to deter current day men.Ego-Syntonic Maladaptive TraitsClaire is a concert pianist and alcoholic. Importantly, Claire does not see her own desire for alcohol as destructive but rather, as something constitutive of her own identity. “I wouldn’t be myself without alcohol,” she says. Reimer asks whether our approach would “work for cases where the agent sees a maladaptive trait as constitutive of their identity?”Answer: Although no approach can guarantee success, our claim is that our approach has a better chance than the main alternative known as the pruning view. Since Claire, by stipulation, is not inclined to see her own drinking as a problem, a... (shrink)

Human consciousness is widely understood to be underpinned by rich and diverse functional networks, whose breakdown results in unconsciousness. Candidate neural correlates of anesthetic-induced unconsciousness include: (1) disrupted frontoparietal functional connectivity; (2) disrupted brain network hubs; and (3) reduced spatiotemporal complexity. However, emerging counterexamples have revealed that these markers may appear outside of the state they are associated with, challenging both their inclusion as markers of conscious level, and the theories of consciousness that rely on their evidence. In this (...) study, we present a case series of three individuals in disorders of consciousness (DOC) who exhibit paradoxical brain responses to exposure to anesthesia. High-density electroencephalographic data were recorded from three patients with unresponsive wakefulness syndrome (UWS) while they underwent a protocol of propofol anesthesia with a targeted effect site concentration of 2 μg/ml. Network hubs and directionality of functional connectivity in the alpha frequency band (8–13 Hz), were estimated using the weighted phase lag index (wPLI) and directed phase lag index (dPLI). The spatiotemporal signal complexity was estimated using three types of Lempel-Ziv complexity (LZC). Our results illustrate that exposure to propofol anesthesia can paradoxically result in: (1) increased frontoparietal feedback-dominant connectivity; (2) posterior network hubs; and (3) increased spatiotemporal complexity. The case examples presented in this paper challenge the role of functional connectivity and spatiotemporal complexity in theories of consciousness and for the clinical evaluation of levels of human consciousness. (shrink)

Classification learning is a preeminent human ability within the animal kingdom but the key mechanisms of brain networks regulating learning remain mostly elusive. Recent neuroimaging advancements have depicted human brain as a complex graph machinery where brain regions are nodes and coherent activities among them represent the functional connections. While long-term motor memories have been found to alter functional connectivity in the resting human brain, a graph topological investigation of the short-time effects of learning are still not widely investigated. (...) For instance, classification learning is known to orchestrate rapid modulation of diverse memory systems like short-term and visual working memories but how the brain functional connectome accommodates such modulations is unclear. We used publicly available repositories (openfmri.org) selecting three experiments, two focused on short-term classification learning along two consecutive runs where learning was promoted by trial-by-trial feedback errors, while a further experiment was used as supplementary control. We analyzed the functional connectivity extracted from BOLD fMRI signals, and estimated the graph information processing in the cerebral networks. The information processing capability, characterized by complex network statistics, significantly improved over runs, together with the subject classification accuracy. Instead, null-learning experiments, where feedbacks came with poor consistency, did not provoke any significant change in the functional connectivity over runs. We propose that learning induces fast modifications in the overall brain network dynamics, definitely ameliorating the short-term potential of the brain to process and integrate information, a dynamic consistently orchestrated by modulations of the functional connections among specific brain regions. (shrink)

The evidence of culture’s impact on corruption and its consequences is still inconclusive despite several investigations: Sometimes, theory is lacking and causes and consequences seem exchangeable. Based on psychological research on the distribution and use of power, we predicted that a steeper distribution of power induces more corruption and elaborated its negative consequences in a complex causal model. For measuring power distribution, pervading national culture, we augmented Hofstede’s ‘Power Distance’ with three additional indicators into a reversed, more reliable and valid (...) culture composite called “Power Balanced Freedom”. Instead of the usual regression and instrument approaches, which cannot estimate multiple causal chains including causal feedback, a non-recursive path analysis was employed with data from 85 nations. PBF predicted less national Corruption, with positive effects on Gross Domestic Product and Inequality Adjusted Human Development. The often expected reverse effect of GDP on Corruption was not significant. Contrary to influential authors from economics, culture variables are the most important predictors of corruption and its consequences. Nonetheless, our extended model supports the main thrust of their ideas and adds more precision. Our conceptual distinction of the uses of power and our empirical measure PBF reflect Kant’s ethical imperative: freedom and autonomy for everyone. Widely shared life chances as measured by IHDI reflect utilitarian, consequentialist ideas. These different ethical approaches are connected in the confirmed causal model, in line with Rawls’ first and second principle of justice. (shrink)

The last years’ achievements in neuroscience are key for a philosophical analysis focused on the mind-body problem, such as the phenomenological approach.The digital evolution, on the one hand, faces us with the interaction between the world of reality and the world of possibility. This means more than a mere coexistence between these two dimensions. Rather, a concrete feedback occurs among them, and this brings out unprecedented and unavoidable issues with regard to perceptual processes. On the other hand, the digital (...) evolution allows for analyzing data and monitoring environmental systems, thus reasoning in a predictive way, anticipating problems, and checking ex ante their evolution and outcomes.Neuroscience, for its part, with the experiments of Libet and their subsequent interpretations, has highlighted a consciousness of the unconscious made of ballistic and automatic processes, which constitutes the starting phase of our decisions and actions. This further confirmed that sequential and linear thinking is unable to address the brain-environment relationship that is key in understanding any cognitive process.This analysis confirms the relevance of different aspects of Husserl’s phenomenology. There is, however, a “but,” which significantly reduces the extent of adherence to his point of view. Husserl assumed that an implicit horizon precedes or accompanies the acts of conscience. This is the material, impressional, passive, receptive, and, in some way, tacit dimension, strictly connected to the issue of genesis, i.e. the process of constitution of the analyzed entities. Thus, he drew a clear dividing line between this dimension and the phases of the self-controlling, vigilant conscience and its activity. In fact, his approach to the phenomenological problem is mainly oriented toward these phases. (shrink)

Objective This study aims to increase self-awareness in patients with Parkinson’s disease (PD) using a newly developed mindfulness-based intervention, tailored for the specific needs of PD patients. Its impact on self-awareness and patients’ daily lives is currently being evaluated. Background Recently, the phenomenon of impaired self-awareness for motor symptoms (ISAm) and some non-motor symptoms has been described in PD. ISAm can negatively influence patients’ daily lives, e.g., by affecting therapy adherence, and is therefore the main focus of this study. The (...) main goal is the development of IPSUM (“Insight into Parkinson’s Disease Symptoms by using Mindfulness”), a PD-specific intervention for increasing patients’ mindfulness and thereby reducing ISAm. Methods The effectiveness of IPSUM is evaluated by comparison of an intervention group with a waitlist-control group. A pre-post design with an additional 8-week follow-up measurement is applied, resulting in three measurement points: before, directly after and 8 weeks after completing the intervention protocol. In total, up to 180 non-depressed PD patients without severe cognitive impairment (non-demented) will be included. The primary outcome is a quantitative score for measuring ISAm. Secondary outcome measures are affective changes, neuropsychological performance and self-awareness of cognition. At pre- and post-measurement an fMRI scan is performed to connect behavioral and neurobiological findings. At post- and follow-up-measurement each patient will take part in a semi-structured interview to explore IPSUM’s impact on self-awareness and patients’ everyday lives. Results The conception of the intervention protocol is finished, the resulting 8-week program is presented in detail. It has successfully been tested in the first group of patients, their feedback so far was quite promising. Recruitment is ongoing and a first interim analysis will be performed once 30 patients have completed IPSUM. Conclusion For the first time, the intervention protocol of IPSUM has successfully been tested in a group of PD patients. As the study goes on, more quantitative data is collected for statistical analyses to evaluate its effectiveness. More qualitative data is collected to evaluate feasibility and effectiveness. We hope for this intervention to be capable of reducing the patients’ ISAm and improving their quality of life on many levels. (shrink)

Zuckerberg almost always tells users that change is hard, often referring back to the early days of Facebook when it had barely any of the features people know and love today. He says sharing and a more open and connected world are had barely any of the features people know and love today. He says sharing and a more open and connected world are good, and often he says he appreciates all the feedback.

Religions, ideologies try to give a complete vision of the world a vision containing both its origin, explanation and a “normative kit”: a collection of precepts and rules, which should regulate human activities and behavior. Their synergetic meaning is clear: if embraced by all they allow for development of strong synergetic effects on the social macro scales. These in turn may lead to creation of order and beauty, of intellectual, spiritual and moral development within men and in society. In this (...) consist the elements of their natural—i.e. not explicitly reasoned out—wisdom. However, as they contain also some elements of harmful consequences—at least if they are literally accepted and in a fundamentalist manner practiced—they cannot be universally accepted. But—rejecting them we lose also the important sourcesof natural—or should we say instinctive—wisdom.Could the solution of this contradiction, of this one of the basic human sources of suffering be looked for in the modern science of complexity?Synergetics and the sciences of complex systems in general offer a solid scientific base for a meta-philosophical, universalist intellectual framework. Its offspring the social synergetics offers concrete propositions of optimized social structures. Optimized in the sense of espousing the main synergetic effects with being at the same time free of the negative “side effects” happening when religions or ideologies are the source of synergism.Finally a connection is discussed between the presented ideas and the concept of “love of wisdom”. The term “love of wisdom” may be understood as striving not only to possess a “sound and serene judgment regarding the conduct of life” but also a practical ability to act according to that judgment.This ability may be also expressed using the information-thermodynamic concepts of synergetics. Indeed without the ever continuing negentropy transformation neither survival of a complex system like man or society nor its continuing development—uncovering of all his “hidden potentials” is possible.To assure maximization of this transformation process creation of strong synergetic effects—of reinforcement, of positive feedback—between all human beings—i.e. not excluding any nations, any social groups, and any individuals—are necessary. Acting towards local and global realization of such a structure everywhere on our planet constitutes the essence of social wisdom.Removing all obstacles towards this goal—obstacles existing on the intellectual, emotional and spiritual level—should be one of the most important tasks of various institutions, of state structures, of purified from mythical elements ideologies, of man oriented sciences and above all of the modern universalism.Thus striving towards its realization is an expression of the love of wisdom. Of wisdom once based on the elements of mythos and now regained in the full light of Logos. (shrink)

This book focuses on six key practices for engaged learning: acknowledging and building on students' prior knowledge and experiences; facilitating relationships; offering feedback; framing connections to broader contexts; fostering reflection and metacognition; and promoting integration and transfer of knowledge and skills.

Current models of speech motor control rely on either trajectory-based control (DIVA, GEPPETO, ACT) or a dynamical systems approach based on feedback control (Task Dynamics, FACTS). While both approaches have provided insights into the speech motor system, it is difficult to connect these findings across models given the distinct theoretical and computational bases of the two approaches. We propose a new extension of the most widely used dynamical systems approach, Task Dynamics, that incorporates many of the strengths of trajectory-based (...) approaches, providing a way to bridge the theoretical divide between what have been two separate approaches to understanding speech motor control. The Task Dynamics (TD) model posits that speech gestures are governed by point attractor dynamics consistent with a critically damped harmonic oscillator. Kinematic trajectories associated with such gestures should therefore be consistent with a second-order dynamical system, possibly modified by blending with temporally overlapping gestures or altering oscillator parameters. This account of observed kinematics is powerful and theoretically appealing, but may be insufficient to account for deviations from predicted kinematics—i.e., changes produced in response to some external perturbations to the jaw, changes in control during acquisition and development, or effects of word/syllable frequency. Optimization, such as would be needed to minimize articulatory effort, is also incompatible with the current TD model, though the idea that the speech production systems economizes effort has a long history and, importantly, also plays a critical role in current theories of domain-general human motor control. To address these issues, we use Dynamic Movement Primitives (DMPs) to expand a dynamical systems framework for speech motor control to allow modification of kinematic trajectories by incorporating a simple, learnable forcing term into existing point attractor dynamics. We show that integration of DMPs with task-based point-attractor dynamics enhances the potential explanatory power of TD in a number of critical ways, including the ability to account for external forces in planning and optimizing both kinematic and dynamic movement costs. At the same time, this approach preserves the successes of Task Dynamics in handling multi-gesture planning and coordination. (shrink)

Neural substrates of fatigue in traumatic brain injury are not well understood despite the considerable burden of fatigue on return to productivity. Fatigue is associated with diminishing performance under conditions of high cognitive demand, sense of effort, or need for motivation, all of which are associated with cognitive control brain network integrity. We hypothesize that the pathophysiology of TBI results in damage to diffuse cognitive control networks, disrupting coordination of moment-to-moment monitoring, prediction, and regulation of behavior. We investigate the cingulo-opercular (...) and frontoparietal networks, which are engaged to sustain attention for task and maintain performance. A total of 61 individuals with mild TBI and 42 orthopedic control subjects participated in functional MRI during performance of a constant effort task requiring altering the amount of effort utilized to manually squeeze a pneumostatic bulb across six 30-s trials. Network-based statistics assessed within-network organization and fluctuation with task manipulations by group. Results demonstrate small group differences in network organization, but considerable group differences in the evolution of task-related modulation of connectivity. The mild TBI group demonstrated elevated CO connectivity throughout the task with little variation in effort level or time on task, while CO connectivity diminished over time in controls. Several interregional CO connections were predictive of fatigue in the TBI group. In contrast, FP connectivity fluctuated with task manipulations and predicted fatigue in the controls, but connectivity fluctuations were delayed in the mild traumatic brain injury group and did not relate to fatigue. Thus, the mTBI group’s hyper-connectivity of the CO irrespective of task demands, along with hypo-connectivity and delayed peak connectivity of the FP, may allow for attainment of task goals, but also contributes to fatigue. Findings are discussed in relation to performance monitoring of prediction error that relies on internal cues from sensorimotor feedback during task performance. Delay or inability to detect and respond to prediction errors in TBI, particularly evident in bilateral insula-temporal CO connectivity, corresponds to day-to-day fatigue and fatigue during task performance. (shrink)

A review of research with chicks, songbirds, rodents, and nonhuman primates indicates that the brain is lateralized for a number of behavioral functions. These findings can be understood in terms of three hypothetical brain processes derived from a brain model based on general systems theory: hemispheric activation, interhemispheric inhibition, and interhemispheric coupling.Left-hemisphere activation occurs in songbirds and nonhuman primates in response to salient auditory or visual input, or when a communicative output is required. The right hemisphere is activated in rats (...) when spatial performance is required, and in chicks when they are placed in an emotion-provoking situation. In rats and chicks interhemispheric activation and inhibition occur when there is an affective component in the environment (novelty, aversive conditioning) or when an emotional response is emitted (copulation, attack, killing). An interhemispheric coupling (correlation) found in rats and rabbits implies that the hemispheres are two major components in a control system with a negative feedback loop. Early-experience variables in rats can induce laterality in a symmetric brain or facilitate its development in an already biased brain.It is predicted that functional lateralization, when present, will be similar across species: the left hemisphere will tend to be involved in communicative functions while the right hemisphere will respond to spatial and affective information; both hemispheres will often interact via activation-inhibition mechanisms when affective or emotional processes are involved. Homologous brain areas and their connecting callosal fibers must be intact at birth and must remain intact throughout development for lateralization to reach its maximum level. Injury to any portion of this unit will result in hemispheric redundancy rather than specialization. One major function of early experience is to provide stimulation during development, which acts to enhance the growth and development of the corpus callosum, thereby giving rise to a more specialized brain. (shrink)

Within the context of exploring new electronic arts' aesthetic regions and unexampled connections between generative art, games and mythology, my practical artistic research was led to focus on labyrinthine structures as exquisite legendary spatial gaming devices and as possible pathways to gain deeper humane insights, resulting into discoveries of original methods of labyrinth formation by means other than human. Labyrinths and mazes are inextricable paths, human made millennial structures that provide spatial challenges often connected with feedback, compression, entanglement and (...) hyper complexification of goal oriented displacement. They are perhaps the most ancient example of structure for spatial and serious games. Novel methods for labyrinth creation ‐ non-human methods ‐ are introduced and exemplified through artistic constructs. These new methods utilize non-human bioelectronic techniques and are initially grouped into three distinct sub-categories: the 'open' method, the 'mathematical flower' method, the 'animal' method. Four case examples of artistic non-human labyrinths resorting to the introduced novel methods are explored: k. video games (2007, 2010), Wolfanddotcom video game (2017), 8-bit Maze Gardens vegetable paintings (2018‐present), Ant Ennae Labyrinths bio-electronic apparatus (2019‐present). (shrink)

This article analyses the sequential ordering of multi-modal discussions in real-time online classes in postgraduate education contexts. The article explores the ways that text and verbal talk are organized by the participants as inter-connecting modes of interaction. Focusing on Initiation, Response and Feedback sequences as an example of a form of exchange, the article shows that the interaction was comparatively disorderly where conducted across talk and text modes. For instance, written responses to questions or to encouragement turns often overlapped (...) with verbal answers from other students or with encouragement turns from the tutor. However, through the withholding of speech turns, the close latching of speech to written talk, and the ceasing of written turns at points where the topics or speakers changed, the participants showed a concern with re-establishing sequential order across the modalities. (shrink)