Establishing the basic knowledge, methodology, and technology for a framework for the continuous decoding of hand/arm movement intention was the aim of the ERC-funded project “Feel Your Reach”. In this work, we review the studies and methods we performed and implemented in the last 6 years, which build the basis for enabling severely paralyzed people to non-invasively control a robotic arm in real-time from electroencephalogram. In detail, we investigated goal-directed movement detection, decoding of executed and attempted (...) movement trajectories, grasping correlates, error processing, and kinesthetic feedback. Although we have tested some of our approaches already with the target populations, we still need to transfer the “Feel Your Reach” framework to people with cervical spinal cord injury and evaluate the decoders’ performance while participants attempt to perform upper-limb movements. While on the one hand, we made major progress towards this ambitious goal, we also critically discuss current limitations. (shrink)

IntroductionPrevious transcranial magnetic stimulation studies have revealed that the activity of the primary motor cortex ipsilateral to an active hand plays an important role in motor control. The aim of this study was to investigate whether the ipsi-M1 excitability would be influenced by goal-directed movement and laterality during unilateral finger movements.MethodTen healthy right-handed subjects performed four finger tapping tasks with the index finger: simple tapping task, Real-word task, Pseudoword task, and Visually guided tapping task. In the Tap (...) task, the subject performed self-paced simple tapping on a touch screen. In the real-word task, the subject tapped letters displayed on the screen one by one to create a Real-word. Because the action had a specific purpose, this task was considered to be goal-directed as compared to the Tap task. In the Pseudoword task, the subject tapped the letters to create a pseudoword in the same manner as in the Real-word task; however, the word was less meaningful. In the VT task, the subject was required to touch a series of illuminated buttons. This task was considered to be less goal-directed than the Pseudoword task. The tasks were performed with the right and left hand, and a rest condition was added as control. Single- and paired-pulse TMS were applied to the ipsi-M1 to measure corticospinal excitability and short- and long-interval intracortical inhibition in the resting first dorsal interosseous muscle.ResultsWe found the smaller SICI in the ipsi-M1 during the VT task compared with the resting condition. Further, both SICI and LICI were smaller in the right than in the left M1, regardless of the task conditions.DiscussionWe found that SICI in the ipsi-M1 is smaller during visual illumination-guided finger movement than during the resting condition. Our finding provides basic data for designing a rehabilitation program that modulates the M1 ipsilateral to the moving limb, for example, for post-stroke patients with severe hemiparesis. (shrink)

The role of intentions in motor planning is heavily weighted in classical psychological theories, but their role in generating eye movements, and our awareness of these oculomotor intentions, has not been investigated explicitly. In this study, the extent to which we monitor oculomotor intentions, i.e. the intentions to shift one’s gaze towards a specific location, and whether they can be expressed in conscious experience, is investigated. A forced-choice decision task was developed where a pair of faces moved systematically across a (...) screen. In some trials, the pair of faces moved additionally as soon as the participants attempted to gaze at one of the faces, preventing them from ever viewing it. The results of the experiment suggest that humans in general do not monitor their eye movement intentions in a way that allows for mismatches between planned gaze landing target and resulting gaze landing target to be consciously experienced during decision-making. (shrink)

We believe that the task goal in voluntary movements provides meaning to existing information sources in the environment and determines, in a dynamic way, the use and relative importance of these different sources. This task-centered meaning bridges the apparent controversy between what information is available in principle (i.e., specification), and what information is perceived.

In order to understand ongoing activity, observers segment it into meaningful temporal parts. Segmentation can be based on bottom‐up processing of distinctive sensory characteristics, such as movement features. Segmentation may also be affected by top‐down effects of knowledge structures, including information about actors' intentions. Three experiments investigated the role of movement features and intentions in perceptual event segmentation, using simple animations. In all conditions, movement features significantly predicted where participants segmented. This relationship was stronger when participants identified (...) larger units than when they identified smaller units, and stronger when the animations were generated randomly than when they were generated by goal‐directed human activity. This pattern suggests that bottom‐up processing played an important role in segmentation of these stimuli, but that this was modulated by top‐down influence of knowledge structures. To describe accurately how observers perceive ongoing activity, one must account for the effects of distinctive sensory characteristics, the effects of knowledge structures, and their interactions. (shrink)

In Parkinson’s disease, the fronto-striatal network is involved in motor and cognitive symptoms. Working memory updating training engages this network in healthy populations, as observed by improved cognitive performance and increased striatal BOLD signal. This two-part study aimed to assess the feasibility of WM updating training in PD and measure change in cognition, movement and functional brain response in one individual with PD after WM updating training. A feasibility and single-subject study were performed in which patients with PD completed (...) computerized WM updating training. The outcome measures were the pre-post changes in criterion and transfer cognitive tests; cognitive complaints; psychological health; movement kinematics; and task-related BOLD signal. Participants in the feasibility study showed improvements on the criterion tests at post-test. FL displayed the largest improvements on the criterion tests and smaller improvements on transfer tests. Furthermore, FL reported improved cognitive performance in everyday life. A shorter onset latency and smoother upper-limb goal-directed movements were measured at post-test, as well as increased activation within the striatum and decreased activation throughout the fronto-parietal WM network. This two-part study demonstrated that WM updating training is feasible to complete for PD patients and that change occurred in FL at post-test in the domains of cognition, movement and functional brain response. (shrink)

In this paper, I will try to integrate Joel Krueger’s enactive theory of music perception with some of Erwin Straus’ reflections on different forms of experiencing spatiality and movement. Krueger (2009, 2011b) maintains that music perception is a form of active perception, in which our body and our ability to move with music act as vehicles to draw out certain features of the piece and to respond to the affordances it presents. However, the author does not specify what kind (...) of movements are involved in the enactment of music perception. I will propose such a specification, using Straus’ distinction between goal-directed and expressive movements (Straus 1930). (shrink)

Looking times and gaze behavior indicate that infants can predict the goal state of an observed simple action event (e.g., object‐directed grasping) already in the first year of life. The present paper mainly focuses on infants’ predictive gaze‐shifts toward the goal of an ongoing action. For this, infants need to generate a forward model of the to‐be‐obtained goal state and to disengage their gaze from the moving agent at a time when information about the action event (...) is still incomplete. By about 6 months of age, infants show goal‐predictive gaze‐shifts, but mainly for familiar actions that they can perform themselves (e.g., grasping) and for familiar agents (e.g., a human hand). Therefore, some theoretical models have highlighted close relations between infants’ ability for action‐goal prediction and their motor development and/or emerging action experience. Recent research indicates that infants can also predict action goals of familiar simple actions performed by non‐human agents (e.g., object‐directed grasping by a mechanical claw) when these agents display agency cues, such as self‐propelled movement, equifinality of goal approach, or production of a salient action effect. This paper provides a review on relevant findings and theoretical models, and proposes that the impacts of action experience and of agency cues can be explained from an action‐event perspective. In particular, infants’ goal‐predictive gaze‐shifts are seen as resulting from an interplay between bottom‐up processing of perceptual information and top‐down influences exerted by event schemata that store information about previously executed or observed actions. (shrink)

The Movement for Black Lives has gained worldwide visibility as a grassroots social justice movement distinguished by a decentralized, non-hierarchal mode of organization. MBL rose to prominence in part thanks to its protests against police brutality and misconduct directed at black Americans. However, its animating concerns are far broader, calling for a wide range of economic, political, legal, and cultural measures to address what it terms a “war against Black people,” as well as the “shared struggle with (...) all oppressed people.” Despite the significance of the social, political, and economic goals of MBL, as well as the innovative organizational leadership strategies it employs, MBL has received little sustained philosophical attention. The Movement for Black Lives: Philosophical Perspectives brings philosophical analysis to bear on the aims, strategies, policy positions, and intellectual-historical context of MBL. Leading scholars address the following themes: “Black Lives Matter” as a political speech act, MBL’s conception of the value of black lives, the gender dynamics of the Movement, the relation of MBL to other black liberation movements and transitional justice movements, the Movement’s new forms of leadership and organization, and the impact of racism on the normative assessment of the criminal justice system. Accordingly, the volume broaches a wide range of pressing issues in the philosophy of language, social and political philosophy, philosophy of race, philosophy of gender, and the philosophy of punishment. It is important reading for students and scholars in the humanities and social sciences interested in race, inequality, and social justice movements. (shrink)

The processes underlying motor decision-making have recently caught considerable amount of scientific attention, focusing on the integration of empirical evidence from sensorimotor control research with psychological theories and computational models on decision-making. Empirical studies on motor decision-making suggest that the kinematics of goal-directed reaching movements are sensitive to the level of target uncertainty during movement planning. However, the source of uncertainty as a relevant factor influencing the process of motor decision-making has not been sufficiently considered, yet. In (...) this study, we test the assumption that the source of target uncertainty has an effect on motor decision-making, which can be proven by analyzing movement variability during the time course of movement execution. Ten healthy young adults performed three blocks with 66 trials of goal-directed reaching movements in each block, across which the source and level of reach target uncertainty at movement onset were manipulated (“no uncertainty”, “extrinsic uncertainty”, “intrinsic uncertainty”). Fingertip position of the right index finger was recorded using an optical motion tracking system. Standard kinematic measures (i.e. path length and movement duration) as well as variability of fingertip position across the time course of movement execution and at movement end were analyzed. In line with previous studies, we found that a high level of extrinsic target uncertainty leads to increased overall movement duration, which could be attributed to increased path length in this condition, as compared to intrinsic and no target uncertainty (all p <.001). Movement duration and path length did not show any differences between the latter two conditions. However, the time course analysis of movement variability revealed significant differences between these two conditions, with increased variability of fingertip position in the presence of intrinsic target uncertainty (Condition × Sampling point: p =.01), though considerably less than under high extrinsic target uncertainty (p ≤.001). These findings suggest that both the level and source of uncertainty have a significant effect on the processing of potential action plans during motor decision-making, which can be revealed through the analysis of the time course of movement variability at the end-effector level. (shrink)

It is well-documented that emotional stimuli impact both the cognitive and motor aspects of “goal-directed” behavior. However, how emotional distractors impact motor performance remains unclear. This study aimed to characterize how movement quality was impacted during emotional distractors. We used a modified oddball paradigm and documented the performance of pure movement. Participants were designated to draw a triangle or a polygon, while an emotional stimulus was presented. Speed was assessed using reaction time and movement time. (...) The quality and precision of movement were assessed by calculating the accuracy and root-mean-square error. Compared to drawings of triangles, polygons had higher accuracy under negative stimuli, but lower RMSE under positive stimuli. The results indicate that distracting emotional stimuli impact different aspects of movement quality, with movement complexity influencing accuracy under negative distractors and precision under positive distractors. This study provides further evidence that movement precision is an important feature of emotional embodiment that should be incorporated in future studies. (shrink)

Information about positions, from which differences in position are computed (as proposed in the vector-integration-to-endpoint model), provides a more plausible perceptual basis for the control of goal-directed arm movements than information about distance (as proposed in the kinematic model).

In its first part, this paper is devoted to presenting Maurice Merleau-Ponty’s phenomenology of space through some of his texts. Between 1942’s The Structure of Behavior and the 1953 courses, Merleau-Ponty is refining a philosophy of movement, the most important concept of which is that of motor intentionality, which articulates the phenomenological theme of intentionality in relation to the problem of a subject’s understanding of observed movement. Movement is thus related to intersubjectivity and Einfühlung. Next, we present (...) the general aspects of and some problems with mirror neuron theory, which were already addressed elsewhere in Merleau-Ponty’s phenomenology: the brain-body relation, the definition of the capability of mirroring in the other individual, the role of the environment in intersubjectivity, and the idea of meaning as “direc­tion” toward goals. We suggest that a transdisciplinary approach can help solve some of the problems wrongly attributed to mirror neuron theorists. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:The Journal of Aesthetic Education 37.1 (2003) 54-63 [Access article in PDF] Movement Class as an Integrative Experience:Academic, Cognitive, and Social Effects Svetlana Nikitina I believe the benefits of this type of course reach beyond the obvious possibilities of professional and academic achievement. The degree of personal discovery, creativity, self-development and insight are immeasurable. I am particularly referring to my experience here at Harvard. Claire Mallardi, from course (...) syllabus Performing arts courses at research institutions such as Harvard University are often seen as extracurricular with only tangential or imperceptible effect on students' academic interests. Yet, when I interviewed biology, math, or neuroscience concentrators who took Claire Mallardi's Movement for Actors and Directors course at Harvard in the spring of 2000, most of them told me that it was one of the most meaningful experiences in their academic development, and, according to one psychology concentrator, "the best psychology course" she ever took. In spite of boundaries separating the arts courses from hard and soft sciences, in students' experience the connections run deep. What were those connections that students made from their dance class experience to their academic and social development? And, what in the teaching and nature of the course supported this highly integrative experience that allowed students to reach beyond mastering an artistic medium and become better learners in general? These were the two major questions that guided this study.Why am I interested in the integrative quality of arts education? I am highlighting the academic importance of performing arts programs to suggest to university administrators and instructors in other disciplines the "immeasurable" personal and academic value of such courses whose place is often seen as marginal. Perhaps also, pedagogy used for integration in this course into the academic fabric of the institution could provide models for other courses and curricula that are trying to be integrative or interdisciplinary in a more self-conscious way. And, there are more and more such [End Page 54] courses on every college campus these days. Moriel Blaisdell in Preparing Faculty for the New Conceptions of Scholarship for example, cites "integrative studies" programs among most important trends in higher education today with their goal "to synthesize, to look for new relationships between the parts and the whole, to relate the past and future to the present, and to ferret out patterns of meaning that cannot be seen through traditional disciplinary lenses." 1One of the most daring experiments in universities now, and the one to which the integrative dance course could speak directly, is interdisciplinary teaching in neuroscience, for example. Neuroscience proceeds from the belief in the inherent unity of mind and body and attempts to discover the nature of the relationship between them. In a different way and with a different goal than arts courses, neurosciences also try to cross the boundary of subjective and objective experience, mind and body, physical technique and personal interpretation, which are at the heart of teaching and learning in the performing arts. While not being prescriptive, I would like to suggest that perhaps close attention to the pedagogy and integrative experiences of students in the performing arts courses could provide some insights for pioneering bridge-making in other academic areas as well.I would like to propose that what lies at the core of integrative capacity of a performing arts course, like the one Claire Mallardi teaches at Harvard, is the inherent tendency of the arts to transcend the boundary of body with the mind, and to seek unity of self as both the subject and the object. In a dance, in the words of Margaret H'Doubler, the body is seen "as the outer aspect of personality, for it is the agent through which we receive impressions from the external world and by which we communicate our meaning." 2 This basic translation between body and mind, mental and physical, artistic and academic that went on in Mallardi's class, resulted in integrative and transformational experiences for her students. "I never until this class — comments one student — equated emotions with movement or... (shrink)

Chris Ealham's book reveals a fascinating dialogue between a prominent individual figure (José Peirats, 1908–1989) and the anonymous masses in the history of Spanish anarcho-syndicalism, and vice versa. Peirats would hardly be known without Spanish anarcho-syndicalism, while Spanish anarcho-syndicalism would have been less relevant if José Peirats had not been included in its ranks. -/- What is remarkable is that, despite Ealham's honest confession of his sympathy for some of the working-class movements in general and for anarcho-syndicalism in particular (3), (...) his research is highly critical of both anarcho-syndicalism and Peirats's numerous personal and ideological errors and contradictions. We need not go far to find examples: in his book, Ealham makes no effort to conceal that Peirats can be described at times using adjectives such as homophobic, sexist (or rather, antifeminist), anti-intellectual, antinationalist, and anticommunist (226). Nevertheless, his negative elements paled in comparison with his achievements. -/- Peirats was born in La Vall d'Uixó (Castellón); he was a brick-maker, anarchist militant, and later a noted writer and historian. The moral influence [End Page 188] coming from his mother and maternal uncles was decisive in the young Peirats's character and training. His informal education, together with his move to Barcelona, awakened his early militancy. In spite of having to work very hard from a young age, he was lucky enough to be educated later at the Ateneo Obrero Racionalista in Sants (a neighborhood in the southern part of Barcelona). There, he started having contact with the Confederación Nacional del Trabajo (CNT), joining the union when he was just fourteen years old. During Primo de Rivera's dictatorship (1927–1930) Peirats was devoted to avoiding—sometimes fighting back against—State repression of syndicalists. He also continued doing manual work while cultivating his intellectual training and techniques as a working-class writer. -/- With the coming of the Second Republic (1931), the general attitude within the CNT was that nothing revolutionary would be achieved by collaborating with professional or parliamentary politics: "radicals like Peirats gave no quarter to the new regime. After the enforced interregnum of the dictatorship, they were primed and ready for direct action" (47). Nonetheless, the CNT was not united on this issue and the disputes over ideological tactics came swiftly. At this point, Ealham pinpoints a three-fold division within the CNT: one revolutionary, one syndicalist, and another anarcho-syndicalist (55–56). The divisions and differences would become even more marked when the CNT took part in the Frente Popular with four anarchist ministers (Federica Montseny, Joan Peiró, Juan García Oliver, and Juan López Sánchez): "the anarchist leaders opted simply to ignore what remained of the old state and accept a policy of 'democratic collaboration' with the other anti-fascist forces on behalf of unity in the fight against authoritarianism" (90). Peirats vehemently opposed this strategy that placed the CNT inside a republican state, and from this time on, including during the Spanish Civil War "conferences, meetings, and plenums were organized like witch-hunts" (104). -/- After Franco's triumph, Peirats did not follow in Montseny's or Germinal Esgleas's footsteps—that is, he opted against a diplomatic passport or any special safe conduct, but joined the multitudes of Republican soldiers and civilians who escaped in their retirada (retreat) towards France (119). In fact, after going through a French internment camp, he asked himself whether the best option was to return to Franco's Spain or try his luck abroad. Without any hint of cowardice, he knew that in Spain he could only expect his death... (shrink)

Way-finding (WF) is the ability to move around efficiently and find the way from a starting point to a destination. It is a component of spatial navigation, a coordinate and goal-directed movement of one’s self through the environment. In the present study, the relationship between WF tasks (route tracing and shortcut finding) and individual factors were explored with the hypothesis that WF tasks would be predicted by different types of cognitive, affective, motivational variables and personality factors. A (...) group of 116 university students (88 F.) was conducted along a route in a virtual environment and then asked first to trace the same route again, and then to find a shortcut between the start and end points. Several instruments assessing visuospatial working memory, mental rotation ability, self-efficacy, spatial anxiety, positive attitude to exploring, and personality traits were administered. The results showed that a latent spatial ability factor (measured with the visuospatial working memory and mental rotations tests) - controlled for gender - predicted route-tracing performance, while self-report measures of anxiety, efficacy, and pleasure in exploring, and some personality traits were more likely to predict shortcut-finding performance. We concluded that both personality and cognitive abilities affect WF performance, but differently, depending on the requirements of the task. (shrink)

While slowness of movement is an obligatory characteristic of Parkinson’s disease (PD), there are conditions in which patients move uncharacteristically fast, attributed to deficient motor inhibition. Here we investigate deficient inhibition in an optimal sensory-motor integration framework, using a game in which subjects used a paddle to catch a virtual ball. Display of the ball was extinguished as soon as the catching movement started, segregating the task into a sensing and acting phase. We analyzed the behavior of 9 (...) PD patients (ON medication) and 10 age-matched controls (HC). The switching times (between sensing and acting phase) were compared to the predicted optimal switching time, based on the individual estimates of sensory and motor uncertainties. The comparison showed that deviation from predicted optimal switching times were similar between groups. However, PD patients showed a weaker correlation between variability in switching time and sensory-motor uncertainty, indicating a reduced propensity to generate exploratory behavior for optimizing goal-directed movements. Analysis of the movement kinematics revealed that PD patients, compared to controls, used a lower peak velocity of the paddle and intercepted the ball with greater velocity. Adjusting the trial duration to the time for the paddle to stop moving, we found that PD patients spent a smaller proportion of the trial duration for observing the ball. Altogether, the results do not show the premature movement initiation and truncated sensory processing that we predicted to ensue from deficient inhibition in PD. (shrink)

In this paper I argue that, to make intentional actions fully intelligible, we need to posit representations of action the content of which is nonconceptual. I further argue that an analysis of the properties of these nonconceptual representations, and of their relation- ships to action representations at higher levels, sheds light on the limits of intentional control. On the one hand, the capacity to form nonconceptual representations of goal-directed movements underscores the capacity to acquire executable concepts of these (...) movements, thus allowing them to come under intentional control. On the other hand, the degree of autonomy these nonconceptual representations enjoy, and the specific temporal constraints stemming from their role in motor control, set limits on intentional control over action execution. (shrink)

This article examines the role that civic agriculture in Georgia plays in shaping attitudes, strategies, and relationships that foster both sustainability and adaptation to a changing climate. Civic agriculture is a social movement that attracts a specific type of “activist” farmer, who is linked to a strong social network that includes other farmers and consumers. Positioning farmers’ practices within a social movement broadens the understanding of adaptive capacity beyond how farmers adapt to understand why they do so. By (...) drawing upon qualitative and quantitative data and by focusing on the cosmological, organizational, and technical dimensions of the social movement, the study illuminates how social values and networks shape production and marketing strategies that enable farmers to share resources and risks. We propose a conceptual framework for understanding how technical and social strategies aimed to address the sustainability goals of the movement also increase adaptive capacity at multiple timescales. In conclusion, we outline directions for future research, including the need for longitudinal studies that focus on consumer motivation and willingness to pay, the effects of scale on consumer loyalty and producer cooperation, and the role of a social movement in climate change adaptation. Finally, we stress that farmers’ ability to thrive in uncertain climate futures calls for transformative approaches to sustainable agriculture that support the development of strong social networks. (shrink)

The principal goal of the brain-computer interface is to translate brain signals into meaningful commands to control external devices or neuroprostheses to restore lost functions of patients with severe motor disabilities. The invasive recording of brain signals involves numerous health issues. Therefore, BCIs based on non-invasive recording modalities such as electroencephalography are safer and more comfortable for the patients. The BCI requires reconstructing continuous movement parameters such as position or velocity for practical application of neuroprostheses. The BCI studies (...) in continuous decoding have extensively relied on extracting features from the amplitude of brain signals, whereas the brain connectivity features have rarely been explored. This study aims to investigate the feasibility of using phase-based connectivity features in decoding continuous hand movements from EEG signals. To this end, the EEG data were collected from seven healthy subjects performing a 2D center-out hand movement task in four orthogonal directions. The phase-locking value and magnitude-squared coherence are exploited as connectivity features along with multiple linear regression for decoding hand positions. A brute-force search approach is employed to find the best channel pairs for extracting features related to hand movements. The results reveal that the regression models based on PLV and MSC features achieve the average Pearson correlations of 0.43 ± 0.03 and 0.42 ± 0.06, respectively, between predicted and actual trajectories over all subjects. The delta and alpha band features have the most contribution in regression analysis. The results also demonstrate that both PLV and MSC decoding models lead to superior results on our data compared to two recently proposed feature extraction methods solely based on the amplitude or phase of recording signals. This study verifies the ability of PLV and MSC features in the continuous decoding of hand movements with linear regression. Thus, our findings suggest that extracting features based on brain connectivity can improve the accuracy of trajectory decoder BCIs. (shrink)

The local food movement has been touted by some as a profoundly effective way to make our food system become more healthy, just, and sustainable. Others have criticized the movement as being less a challenge to the status quo and more an easily co-opted support offering just another set of choices for affluent consumers. In this paper, we analyze three distinct sub-movements within the local food movement, the individual-focused sub-movement, the systems-focused sub-movement, and the community-focused (...) sub-movement. These movements can be combined within any particular campaign or within the goals of any particular organization or individual activist, but they are nevertheless quite different from each other, and come out of different conceptualizations of what food, people, and locality are. We argue that most of the critiques leveled against local food are actually directed against the individual-focused sub-movement, which is most compatible with the current industrial food system, and perhaps not surprisingly receives the most mainstream attention. Further, we argue that while each movement has its own strengths and weaknesses, it is the community-focused sub-movement that has the most potential to radically transform the global food system. (shrink)

This paper examines selected writings of the American science writer Waldemar Kaempffert, Science Editor for the New York Times, in public support of Otto Neurath, his Isotype projects, and his Unity of Science Movement. Attention is focused first on Kaempffert’s writings in the 1930s, when some intellectuals, the American public, and their elected leaders were relatively sympathetic with Neurath’s quest to unify the sciences in ways that would advance and direct scientific research toward practical goals. Attention then turns to (...) the 1940s to examine the debate over the nature, scope, and limits of wartime research and Vannevar Bush’s call for a national institution to support research. Against Bush, James Bryant Conant, and others, Kaempffert argued vigorously for a foundation that would adopt values and methods of the Unity of Science Movement, but he lost that argument as the National Science Foundation finally took shape. To suggest that this public debate influenced not only the decline of Neurath’s Unity of Science Movement but the scholarly development of history and philosophy of science after the war, the paper considers early writings and events in the life of Conant’s protégé Thomas Kuhn, whose Structure of Scientific Revolutions helped shape that development. (shrink)

Human vision supports social perception by efficiently detecting agents and extracting rich information about their actions, goals, and intentions. Here, we explore the cognitive architecture of perceived animacy by constructing Bayesian models that integrate domain‐specific hypotheses of social agency with domain‐general cognitive constraints on sensory, memory, and attentional processing. Our model posits that perceived animacy combines a bottom–up, feature‐based, parallel search for goal‐directed movements with a top–down selection process for intent inference. The interaction of these architecturally distinct processes (...) makes perceived animacy fast, flexible, and yet cognitively efficient. In the context of chasing, in which a predator (the “wolf”) pursues a prey (the “sheep”), our model addresses the computational challenge of identifying target agents among varying numbers of distractor objects, despite a quadratic increase in the number of possible interactions as more objects appear in a scene. By comparing modeling results with human psychophysics in several studies, we show that the effectiveness and efficiency of human perceived animacy can be explained by a Bayesian ideal observer model with realistic cognitive constraints. These results provide an understanding of perceived animacy at the algorithmic level—how it is achieved by cognitive mechanisms such as attention and working memory, and how it can be integrated with higher‐level reasoning about social agency. (shrink)

Patients with delusions of control are abnormally aware of the sensory consequences of their actions and have difficulty with on-line corrections of movement. As a result they do not feel in control of their movements. At the same time they are strongly aware of the action being intentional. This leads them to believe that their actions are being controlled by an external agent. In contrast, the normal mark of the self in action is that we have very little experience (...) of it. Most of the time we are not aware of the sensory consequences of our actions or of the various subtle corrections that we make during the course of goal-directed actions. We know that we are agents and that we are successfully causing the world to change. But as actors we move through the world like shadows glimpsed only occasional from the corner of an eye. (shrink)

The pull to coordinate with other individuals is fundamental, serving as the basis for our social connectedness to others. Discussed is a dynamical and ecological perspective to joint action, an approach that embeds the individual’s mind in a body and the body in a niche, a physical and social environment. Research on uninstructed coordination of simple incidental rhythmic movement, along with research on goal‐directed, embodied cooperation, is reviewed. Finally, recent research is discussed that extends the coordination and (...) cooperation studies, examining how synchronizing with another, and how emergent social units of perceiving and acting are reflected in people’s feelings of connection to others. (shrink)

The strong sensorimotor account of perception gives self-induced movements two constitutive roles in explaining visual consciousness. The first says that self-induced movements are vehicles of visual awareness, and for this reason consciousness ‘does not happen in the brain only’. The second says that the phenomenal nature of visual experiences is consists in the action-directing content of vision. In response I suggest, first, that the sense in which visual awareness is active should be explained by appeal to the role of attention (...) in visual consciousness, rather than self-induced movements; and second, that the sense in which perceptual consciousness does not happen in the brain only should be explained by appeal to the relational nature of perceptual consciousness, appeal to which also shows why links with action cannot exhaust phenomenal content. (shrink)

In pragma-dialectics, a study of legal reasoning analyses judicial judgements’ dialectical and rhetorical aspects. Most analytical studies of legal reasoning focus on the role of judges and their decision-making mechanisms. In our study, we focus on the strategic manoeuvring of the opposing parties. Depending on the context, parties may have to justify their decision to litigants, a professional audience, and the public in rhetorically and dialectically different ways. What makes strategic manoeuvring special in judicial trials is that rhetorical aims (winning (...) the debate) and dialectical aims (convincing the jury), in contrast with debates where parties dialectically aim at resolving a dispute by reaching consensus, are not in conflict. We analyse the Depp ctr. Heard trial 2022, focusing on the parties’ dialectical potential in cases when rhetorical aspects play an important role in addition to objective evidence required by the legal framework. Depp’s party started the trial with a strategic movement we shall call as a ‘topical shift’, doubling their starting position, aiming at dual dialectical goals, and hence also beginning a new debate parallel with the apparently only one by introducing a not directly relevant factor into the debate. Although other factors also played a role in Depp’s victory, setting up his position in the confrontation stage this way was decisive for the trial’s outcome: Heard’s party, following a traditional route, joined actively in one of the dual debates only, effectively giving up the extra debate started by Depp. This way, analysing the trial offers wider consequences to how to understand strategic manoeuvring in judicial trials, and in general as well. (shrink)

Emotion influences parameters of goal-directed whole-body movements in several ways. For instance, previous research has shown that approaching (moving toward) pleasant stimuli is easier compared to approaching unpleasant stimuli. However, some studies found that when emotional pictures are viewed for a longer time, approaching unpleasant stimuli may in fact be facilitated. The effect of viewing duration may have modulated whole-body approach movement in previous research but this has not been investigated to date. In the current study, participants (...) initiated a step forward after viewing neutral, high-arousal pleasant and high-arousal unpleasant stimuli. The viewing duration of the stimuli was set to seven different durations, varying from 100 to 4000 ms. Valence and arousal scores were collected for all stimuli. The results indicate that both viewing duration and the arousal of the stimuli influence kinematic parameters in forward gait initiation. Specifically, longer viewing duration, compared to shorter viewing duration, (a) diminished the step length and peak velocity in both neutral and emotional stimuli, (b) increased reaction time in neutral stimuli and, (c) decreased reaction time in pleasant and unpleasant stimuli. Strikingly, no differences were found between high-arousal pleasant and high-arousal unpleasant stimuli. In other words, the valence of the stimuli did not influence kinematic parameters of forward step initiation. Instead the arousal level (neutral: low; pleasant and unpleasant: high) explained the variance found in the results. The kinematics of forward gait initiation seemed to be reflected in the subjective arousal scores, but not the valence scores. So it seems arousal affects forward gait initiation parameters more strongly than valence. In addition, longer viewing duration seemed to cause diminished alertness, affecting GI parameters. These results shed new light on the prevailing theoretical interpretations regarding approach motivation in the literature, which warrants further examination in future research. (shrink)

Over the last few decades there has emerged a small, yet influential eco-Buddhism movement in South Korea which, since the turn of the millennium, has seen several S?n Buddhist clerics engage in high-profile protests and activism campaigns opposing massive development projects which threatened widespread ecological destruction. This article will survey the issues and events surrounding three such protests; the 2003 samboilbae, or ‘threesteps- one-bow’, march led by Venerable Suky?ng against the Saemangeum Reclamation Project, Venerable Jiyul’s Anti-Mt. Ch?ns?ng tunnel hunger-strike (...) campaign between 2002 and 2006, and lastly Venerable Munsu’s self-immolation protesting the Four Rivers Project in 2010. This article will additionally analyze the attempts by these clerics to deploy innovative and distinctively Buddhist forms of protest, the effects of these protests, and how these protests have altered public perceptions of the role of Buddhist clergy in Korean society. This study will additionally highlight issues relevant to the broader discourse regarding the intersection of Buddhism and social activism, such as the appropriation of traditional Buddhist practices as protest tactics and the potential for conflict between social engagement and the pursuit of Buddhist soteriological goals. (shrink)

Shapes that are rendered invisible through backward masking are still able to influence motor responses: this is called masked priming. Yet it is unknown whether this influence is on the control of ongoing action, or whether it merely influences the initiation of an already-programmed action. We modified a masked priming procedure such that the critical prime-mask sequence was displayed during the execution of an already-initiated goal-directed pointing movement. Psychophysical tests of prime visibility indicated that the identity of (...) the prime shapes were not accessible to participants for conscious report. Yet detailed kinematic analysis of the finger in motion revealed that masked primes had an influence on the pointing trajectories within 277 ms of their appearance, 56 ms earlier than the trajectory deviations observed in response to the visible masks. These results indicate that subliminal shapes can indeed influence the control of ongoing motor activity. (shrink)

In this essay we aim to present some considerations regarding a minimal but concrete notion of agency and goal-directed behavior that are useful for characterizing biological systems at different scales. These considerations are a particular perspective, bringing together concepts from dynamical systems, combinatorial problem-solving, and connectionist learning with an emphasis on the relationship between parts and wholes. This perspective affords some ways to think about agents that are concrete and quantifiable, and relevant to some important biological issues. Instead (...) of advocating for a strict definition of minimally agential characteristics, we focus on how (even for a modest notion of agency) the agency of a system can be more than the sum of the agency of its parts. We quantify this in terms of the problem-solving competency of a system with respect to resolution of the frustrations between its parts. This requires goal-directed behavior in the sense of delayed gratification, i.e., taking dynamical trajectories that forego short-term gains (or sustain short-term stress or frustration) in favor of long-term gains. In order for this competency to belong to the system (rather than to its parts or given by its construction or design), it can involve distributed systemic knowledge that is acquired through experience, i.e., changes in the organization of the relationships among its parts (without presupposing a system-level reward function for such changes). This conception of agency helps us think about the ways in which cells, organisms, and perhaps other biological scales, can be agential (i.e., more agential than their parts) in a quantifiable sense, without denying that the behavior of the whole depends on the behaviors of the parts in their current organization. (shrink)

Philosophical theories of action have been dominated by the view that the presence of certain kinds of intentions on the part of the agent are the mark of action. Specifically, action theorists have typically based their analyses on the premise that whether something is an action depends on whether what was done was purposeful, goal-directed, or intended, and that it was brought about in some way by or done with an intention of the agent. Furthermore, action theorists have (...) been mainly concerned to analyze our most basic actions---for instance, those actions that consist in, or are brought about by, a single bodily movement of the agent. ;This dissertation is concerned with an analysis of a more complex class of action. This class includes actions that are brought about by a group of agents. For instance, when an angry mob riots or when two people lift a heavy table together, the individuals in the collective contribute their own individual actions toward a so-called 'collective action'. While collective actions typically involve two or more agents contributing their individual actions toward a 'larger' group action, actions that are comprised of a collection of actions may be authored by a single individual as well. For instance, a single individual may calculate her taxes or prepare a meal by performing a number of individual constituent actions. Actions that are brought about by collection of actions, but are the product of a single individual are here called 'aggregate actions.' ;The aim of this dissertation is two fold. First, it is to provide an extended argument that aggregate and collective action warrant the same analysis. Second, it is to propose such a unified analysis of aggregate and collective action. Specifically, this dissertation argues that the intention-based accounts of action fail to give an adequate analysis of composite action. Rather, it is proposed that the mark of a composite action depends on a certain kind of causal consequence, which is termed a 'non-additive' causal consequence. (shrink)

The sciences may be able to describe living beings, but this is not to account for their life. Life is not a describable property of things. There is also no philosophical a priori argument by which one could prove the existence of life – except perhaps our own. In order to understand what life is, we must start with our conception of that life that we know, human life, and reduce the notion of this life to a notion of mere (...) life. We may do this by introducing the following distinctions. Intentional movements may succeed, be interrupted, or be mistaken. In contrast, merely teleological movements can only succeed or be interrupted, but not mistaken. Further, intentional movements are executed as more or less suitable means for achieving an end. Merely teleological movements are not performed as means to ends in this sense, but that does not render them less goal-directed. (shrink)

We can easily discriminate self-produced from externally generated sensory signals. Recent studies suggest that the prediction of the sensory consequences of one’s own actions made by forward model can be used to attenuate the sensory effects of self-produced movements, thereby enabling a differentiation of the self-produced sensation from the externally generated one. The present study showed that attenuation of sensation occurred both when participants themselves performed a goal-directed action and when they observed experimenter performing the same action, although (...) they clearly reported that the tones were produced by other during action observation and by themselves during their own action. These results suggest that sensory prediction of action modulates ongoing auditory processing irrespective of who produces the sounds and that the explicit judgment of agency does not necessarily rely on the same mechanisms on which implicit perceptual measures such as sensory attenuation rely. (shrink)

Goal Directed Proof Theory presents a uniform and coherent methodology for automated deduction in non-classical logics, the relevance of which to computer science is now widely acknowledged. The methodology is based on goal-directed provability. It is a generalization of the logic programming style of deduction, and it is particularly favourable for proof search. The methodology is applied for the first time in a uniform way to a wide range of non-classical systems, covering intuitionistic, intermediate, modal and (...) substructural logics. The book can also be used as an introduction to these logical systems form a procedural perspective. Readership: Computer scientists, mathematicians and philosophers, and anyone interested in the automation of reasoning based on non-classical logics. The book is suitable for self study, its only prerequisite being some elementary knowledge of logic and proof theory. (shrink)

This essay will defend a causal conception of action explanations in terms of an agent’s reasons by delineating a metaphysical and epistemic framework that allows us to view folk psychology as providing us with causal and autonomous explanatory strategies of accounting for individual agency. At the same time, I will calm philosophical concerns about the issue of causal deviance that have been at the center of the recent debates between causalist and noncausalist interpretations of action explanations. For that purpose, it (...) is important to realize that the domain of folk-psychological action explanation is also the domain of skillful and goal-directed bodily movements, a domain to which we have independent epistemic access. (shrink)

Nature and significance of the ‚final cause’︁ in Aristotle. − 1. In Aristotle's treatment of the tissues and the organs of animal body the search for their final cause is nothing but the search for their function. There are no speculations about the origin of the purposive organisation of biological species, because species are eternal for him. − 2. When Aristotle is describing the production and propagation of an animal as goal‐directed, he does not exclude a causal explanation. (...) He gives causal explanations at great length in De generatione animalium: Against widespread views it is not the future goal that controls the development as a retroactive cause. In animal blood a sort of genetic code is included, which is represented by impulses (which you can imagine as undulatory motions). By these genetic impulses the form of the parent will be transported to the semen (or the menstrual blood in the case of woman) and from the semen to the germ of the offspring. − 3. The biological use of the concept of purpose or goal is quite different from the use in physics and cosmology. In ignorance of the law of inertia Aristotle tries to explain the continuous movement in the world metaphysically, by assuming a tendency of the stars towards the immaterial god. Terminologically he strictly distinguishes this tendency from the ‚final cause’︁ in biology. − 4. In policy man aims at welfare and ‚good life’︁. In history Aristotle denies a goal‐directed progress. (shrink)

The overall goal of this target article is to demonstrate a mechanism for an embodied cognition. The particular vehicle is a much-studied, but still widely debated phenomenon seen in 7–12 month-old-infants. In Piaget's classic “A-not-B error,” infants who have successfully uncovered a toy at location “A” continue to reach to that location even after they watch the toy hidden in a nearby location “B.” Here, we question the traditional explanations of the error as an indicator of infants' concepts of (...) objects or other static mental structures. Instead, we demonstrate that the A-not-B error and its previously puzzling contextual variations can be understood by the coupled dynamics of the ordinary processes of goal-directed actions: looking, planning, reaching, and remembering. We offer a formal dynamic theory and model based on cognitive embodiment that both simulates the known A-not-B effects and offers novel predictions that match new experimental results. The demonstration supports an embodied view by casting the mental events involved in perception, planning, deciding, and remembering in the same analogic dynamic language as that used to describe bodily movement, so that they may be continuously meshed. We maintain that this mesh is a pre-eminently cognitive act of “knowing” not only in infancy but also in everyday activities throughout the life span. Key Words: cognitive development; dynamical systems theory; embodied cognition; infant development; motor control; motor planning; perception and action. (shrink)

Examination of infant spontaneous and goal-directed arm movements supports Feldman and Levin's hypothesis of a functional hierarchy. Early infant movements are dominated by biomechanical and dynamic factors without external frames of reference. Development involves not only learning to generate these frames of reference, but also protecting the higher-level goal of the movement from internal and external perturbations.

This review summarizes recent experiments on neuronal mechanisms underlying goal-directed behaviour. We investigated two basic processes, the internally triggered initiation of movement and the processing of reward information. Single neurons in the striatum were activated a few seconds before self-initiated movements in the absence of external triggering stimuli. Similar activations were observed in the closely connected cortical supplementary motor area, suggesting that these activations might evolve through build up in fronto-basal ganglia loops. They may relate to intentional (...) states directed at movements and their outcomes. As a second result, neurons in the striatum were activated in relation to the expectation and detection of rewards. Since rewards constitute important goals of behaviour, these activitations might reflect the evaluation of outcome before the behavioural reaction is executed. Thus neurons in the basal ganglia are involved in individual components of goal-directed behaviour. (shrink)

Argues for a constraint on a proper theory of motivation – namely, that proper motivational explanations of goal‐directed actions are causal explanations. The chapter criticizes the thesis that acceptable teleological explanations of actions are not causal explanations and it offers a solution to a problem that deviant causal chains pose for a causal theory of action.

This volume presents chapters from internationally renowned scholars in the area of goals and social behavior.