While discussion is a hallmark of philosophy teaching methods, some instructors express doubt as to the possibilities for its meaningful implementation in online classes. Here, I report on a routine that utilized synchronous and asynchronous discussion strategies to promote community-building and critical engagement in an educational philosophy class forced online due to the COVID-19 pandemic. Before class, students used social annotation software to collaboratively read a text. During class, we pursued whole-group discussion using student-centered strategies before breaking into (...) partners for small-group work on a written discussion prompt. After class, students individually replied to the prompts written by these small groups. Results show that students found that this routinized structure promoted engagement with the course content and each other, ultimately building a community that supported critical thinking in the virtual classroom. Implications are raised regarding instructor workload and control over course outcomes. (shrink)

Reinvention of the form of expression is a conceptual approach characteristic for the evolution of all arts. This research study provides one such step forward in the advancement of scientific paper, a standard form of expression in natural sciences, toward more progressive terrains. The paper adopts the form of a theatrical play where a scientific family of four attempts to find the way around a writer’s block (Act I). Their idealess sense of confinement is overcome through arts or, more specifically, (...) through scientific research implementing the aesthetics of music as its key element. The characters record compositions differing in the degrees of consonance, rhythmicity and tonality, and play them to birds to observe their vocal and behavioral responses (Act II). They note that the birdsong volume drops significantly when the piano tunes, especially the compositionally complex ones, are played to the birds and increases signifcantly when the white noise of ocean waves is played. The bird count experiment proves indirectly that the birdsong volume reduction is an auditory response of the birds to music rather than the effect of their migrating to or away from the sound source. This science with the flavor of art elevates the characters beyond the limits of their confinement and they, exalted and uplifted, gain ideas for creative research in their own disciplines of biomedical science (Act III). They relinquish the newly gained freedom in favor of embracing love for humanity that underlies medical research and return to their confinement, where they conduct, in the coda of the paper, a series of experiments that venture beyond musicology and ornithology and fall in the domains of tissue engineering and drug delivery, but also psychology (Act III). First, sparrow nests are used as templates for tissue engineering constructs, which facilitate the growth of human fibroblastic cells better than their artificial, gridded replicas. Next, the shell of an Easter egg, predominantly calcite in composition, is used with success as a drug delivery carrier. Lastly, the bird nest drawing experiment demonstrates a greater mental health of children than that of the adults, correlating with one of the overarching points of the paper, which is to present children as a model for grownups to follow rather than the other way around. Over the course of the play, the characters discuss the value of the various fusions between art and science, question the limits of human language and repeatedly go off-topic to celebrate the freeness of the creative thinking process. The play reports on real-life research methods and scientific results through a narrative, without diminishing their empirical rigor and analytical accuracy. (shrink)

We present a theoretical framework bearing on the evolution of written communication. We analyze writing as a special kind of graphic code. Like languages, graphic codes consist of stable, conventional mappings between symbols and meanings, but (unlike spoken or signed languages) their symbols consist of enduring images. This gives them the unique capacity to transmit information in one go across time and space. Yet this capacity usually remains quite unexploited, because most graphic codes are insufficiently informative. They may only (...) be used for mnemonic purposes or as props for oral communication in real-time encounters. Writing systems, unlike other graphic codes, work by encoding a natural language. This allows them to support asynchronous communication in a more powerful and versatile way than any other graphic code. Yet, writing systems will not automatically unlock the capacity to communicate asynchronously. We argue that this capacity is a rarity in non-literate societies, and not so frequent even in literate ones. Asynchronous communication is intrinsically inefficient because asynchrony constrains the amount of information that the interlocutors share and limits possibilities for repair. This would explain why synchronous, face-to-face communication always fosters the development of sophisticated codes (natural languages), but similar codes for asynchronous communication evolve with more difficulties. It also implies that writing cannot have evolved, at first, for supporting asynchronous communication. (shrink)

There are two main ways to teach a course online: synchronously or asynchronously. In an asynchronous course, students can log on at their convenience and do the course work. In a synchronous course, there is a requirement that all students be online at specific times, to allow for a shared course environment. In this article, the author discusses the strengths and weaknesses of synchronous online learning for the teaching of undergraduate philosophy courses. The author discusses specific strategies (...) and technologies he uses in the teaching of online philosophy courses. In particular, the author discusses how he uses videoconferencing to create a classroom-like environment in an online class. (shrink)

Technology is not only an object of philosophical reflection but also something that can change this reflection. This paper discusses the potential of computer-supported argument visualization tools for coping with the complexity of philosophical arguments. I will show, in particular, how the interactive and web-based argument mapping software “AGORA-net” can change the practice of philosophical reflection, communication, and collaboration. AGORA-net allows the graphical representation of complex argumentations in logical form and the synchronous and asynchronous collaboration on those “argument (...) maps” on the internet. Web-based argument mapping can overcome limits of space, time, and access, and it can empower users from all over the world to clarify their reasoning and to participate in deliberation and debate. Collaborative and web-based argument mapping tools such as AGORA-net can change the practice of arguing in two dimensions. First, arguing on web-based argument maps in both collaborative and adversarial form can lead to a fundamental shift in the way arguments are produced and debated. It can provide an alternative to the traditional four-step process of writing, publishing, debating, and responding in new writing with its clear distinction between individual and social activities by a process in which these four steps happen virtually simultaneously, and individual and social activities become more closely intertwined. Second, by replacing the linear form of arguments through graphical representations of networks of inferential relations which can grow over time in an infinite space, these tools do not only allow a clear visualization of structures and relations, but also forms of collaboration in which, for example, participants work on different “construction zones” of larger argument maps, or debates are performed at specific points of disagreement on those maps. I introduce the term synergetic logosymphysis to describe a practice that combines these two dimensions of collaborative- and web-based argument mapping. (shrink)

Schizophrenia is associated with a series of visual perception impairments, which might impact on the patients’ every day life and be related to clinical symptoms. However, the heterogeneity of the visual disorders make it a challenge to understand both the mechanisms and the consequences of these impairments, i.e., the way patients experience the outer world. Based on earlier psychiatry literature, we argue that issues regarding time might shed a new light on the disorders observed in patients with schizophrenia.We will (...) briefly review the mechanisms involved in the sense of time continuity and clinical evidence that they are impaired in patients with schizophrenia.We will then summarize a recent experimental approach regarding the coding of time-event structure in time, namely the ability to discriminate between simultaneous and asynchronous events. The use of an original method of analysis allowed us to distinguish between explicit and implicit judgments of synchrony.We showed that for SOAs below 20ms neither patients nor controls fuse events in time. On the contrary subjects distinguish events at an implicit level even when judging them as synchronous. In addition, the implicit responses of patients and controls differ qualitatively. It is as if controls always put more weight on the last occurred event, whereas patients have a difficulty to follow events in time at an implicit level. In patients, there is a clear dissociation between results at short and large asynchronies, that suggest selective mechanisms for the implicit coding of time-event structure. These results might explain the disruption of the sense of time continuity in patients.We argue that this line of research might also help us to better understand the mechanisms of the visual impairments in patients and how they see their environment. (shrink)

Isolated feedforward networks (FFNs) of spiking neurons have been studied extensively for their ability to propagate transient synchrony and asynchronous firing rates, in the presence of activity independent synaptic background noise (Diesmann et al., 1999; van Rossum et al., 2002). In a biologically realistic scenario, however, the FFN should be embedded in a recurrent network, such that the activity in the FFN and the network activity may dynamically interact. Previously, transient synchrony propagating in an FFN was found to destabilize (...) the dynamics of the embedding network (Mehring et al., 2003). Here, we show that by modeling synapses as conductance transients, rather than current sources, it is possible to embed and propagate transient synchrony in the FFN, without destabilizing the background network dynamics. However, the network activity has a strong impact on the type of activity that can be propagated in the embedded FFN. Global synchrony and high firing rates in the embedding network prohibit the propagation of both, synchronous and asynchronous spiking activity. In contrast, asynchronous low-rate network states support the propagation of both, synchronous spiking and asynchro- nous, but only low firing rates. In either case, spiking activity tends to synchronize as it propagates, challenging the feasibility to transmit information in asynchronous firing rates. Finally, asynchronous network activity allows to embed more than one FFN, with the amount of cross talk depending on the degree of overlap in the FFNs. This opens the possibility of computational mechanisms using transient synchrony among the activities in multiple FFNs. (shrink)

A decision delay can translate into significant financial and business losses. One way to accelerate the decision process is through improved communication among the stakeholders engaged in the project. Capturing, transferring, managing, and reusing data, information, and knowledge in the context it is generated can lead to higher productivity, effective communication, reduced number of requests for clarification, and a shorter time-to-market cycle. We formalized the concept of reflection in interaction during communicative events among multiple project stakeholders. This concept extends (...) Donald Schon’s theory of reflection in action of a single practitioner. We model the observed reflection in interaction with a prototype system called TalkingPaperTM. It is a ubiquitous client-server collaborative environment that facilitates knowledge capture, sharing, and reuse during synchronous and asynchronous communicative events. TalkingPaperTM bridges the paper and digital worlds. It transforms the analog verbal discours, annotated paper corporate documents, and the paper and pencil sketches into indexed and synchronized digital content that is published on and streamed on-demand from a TalkingPaperTM web server. The TalkingPaperTM sessions can be accessed by all stakeholders for rapid knowledge sharing and decision-making. (shrink)

In previous studies investigating entrainment and person perception, synchronized movements were found to enhance memory for incidental person attributes. Although this effect is robust, including in dance, the process by which it is actuated are less well understood. In this study, two hypotheses are investigated: that enhanced memory for person attributes is the result of (1) increased gaze time between in-tempo dancers, and/or (2) greater attentional focus between in-tempo dancers. To explore these possible mechanisms in the context of observing (...) dance, an eye-tracking study was conducted in which subjects watched videos of pairs of laterally positioned dancers; only one of the dancers was synchronized with the music, the other being asynchronous. The results were consistent with the first hypothesis—music-dance synchrony gives rise to increased visual inspection times. In addition, there was a preference for upper-body fixations over lower-body fixations across both synchronous and asynchronous conditions. A subsequent, single-dancer eye-tracking study investigated fixations across different body regions, including head, torso, legs and feet. Significantly greater dwell times were recorded for head than torso and legs; feet attracted significantly less dwell time than any other body region. Lastly, the study sought to identify dance gestures responsible for torso- and head-directed fixations. Specifically we asked whether there are features in dance that are specially designed to direct an observer’s gaze towards the face—the main “communicative portal” with respect to the transmission of intent, affect and empathy. (shrink)

Here, we assess the usefulness of first-person methods for the study of embodiment during the rubber hand illusion (RHI). Participants observed a rubber hand being stroked synchronously and asynchronously with their concealed hand after which they made proprioceptive judgments about the location of their hand and completed a self-report questionnaire. A randomly selected cohort was further interviewed during the illusion and their transcripts analyzed using interpretative phenomenological analysis (IPA). Results showed that the IPA group experienced a more intense embodied experience (...) during the RHI, measured by proprioceptive distortion and self-report. IPA revealed four main themes of embodied experience: recalibration of the body schema; violation of the body schema; multisensory integration; and illusory experience over time. The report of agency was a significant predictor of proprioceptive distortion. This study shows how first-person methodologies can be empirically rigorous and how the introspective interview provides a rich, detailed account of embodied experience. (shrink)

The simultaneous recording of brain activity in two or more people, termed hyperscanning, is an emerging field of research investigating the neural basis of social interaction. Hyperscanning studies of adult–infant dyads have great potential to provide insights into how social functions develop. In particular, taking advantage of functional near-infrared spectroscopy for its spatial resolution and invulnerability to motion artifacts, adult–infant fNIRS may play a major role in this field. However, there remains a problem in analyzing hyperscanning data between adult and (...) young populations. Namely, there are intrinsic differences in hemodynamic time latencies depending on age, and the peak latency of the hemodynamic response function is longer in younger populations. Despite this fact, the effects of such differences on quantified synchrony have not yet been examined. Consequently, the present study investigated the influence of intrinsic hemodynamic differences on wavelet coherence for assessing brain synchrony, and further examined the statistical removal of these effects through simulation experiments. First, we assumed a social signal model, where one counterpart of the dyad sends a social signal to the other, which eventually results in simultaneous brain activation. Based on this model, simulated fNIRS activation sequences were synthesized by convolving boxcar event sequences with HRFs. We set two conditions for the event: synchronized and asynchronized event conditions. We also modeled the HRFs of adults and infants by referring to previous studies. After preprocessing with additional statistical processing, we calculated the wavelet coherence for each synthesized fNIRS activation sequence pair. The simulation results showed that the wavelet coherence in the synchronized event condition was attenuated for the combination of different HRFs. We also confirmed that prewhitening via an autoregressive filter could recover the attenuation of wavelet coherence in the 0.03–0.1 Hz frequency band, which was regarded as being associated with synchronous neural activity. Our results showed that variability in hemodynamics affected the analysis of inter-brain synchrony, and that the application of prewhitening is critical for such evaluations between adult and young populations. (shrink)

Body ownership concerns what it is like to feel a body part or a full body as mine, and has become a prominent area of study. We propose that there is a closely related type of bodily self-consciousness largely neglected by researchers—experiential ownership. It refers to the sense that I am the one who is having a conscious experience. Are body ownership and experiential ownership actually the same phenomenon or are they genuinely different? In our experiments, the participant watched a (...) rubber hand or someone else’s body from the first-person perspective and was touched either synchronously or asynchronously. The main findings: (1) The sense of body ownership was hindered in the asynchronous conditions of both the body-part and the full-body experiments. However, a strong sense of experiential ownership was observed in those conditions. (2) We found the opposite when the participants’ responses were measured after tactile stimulations had ceased for 5 s. In the synchronous conditions of another set of body-part and full-body experiments, only experiential ownership was blocked but not body ownership. These results demonstrate for the first time the double dissociation between body ownership and experiential ownership. Experiential ownership is indeed a distinct type of bodily self-consciousness. (shrink)

Adopting the perspective of another person is an important aspect of social cognition and has been shown to depend on multisensory signals from one’s own body. Recent work suggests that interoceptive signals not only contribute to own-body perception and self-consciousness, but also to empathy. Here we investigated if social cognition – in particular adopting the perspective of another person – can be altered by a systematic manipulation of interoceptive cues and further, if this effect depends on empathic ability. The own-body (...) transformation task – wherein participants are instructed to imagine taking the perspective and position of a virtual body presented on a computer screen – offers an effective way to measure reaction time differences linked to the mental effort of taking an other’s perspective. Here, we adapted the OBT with the flashing of a silhouette surrounding the virtual body, either synchronously or asynchronously with the timing of participants’ heartbeats. We evaluated the impact of this cardio-visual synchrony on reaction times and accuracy rates in the OBT. Empathy was assessed with the empathy quotient questionnaire. Based on previous work using the cardio-visual paradigm, we predicted that synchronous cardio-visual stimulation would increase self-identification with the virtual body and facilitate participants’ ability to adopt the virtual body’s perspective, thereby enhancing performance on the task, particularly in participants with higher empathy scores. We report that participants with high empathy showed significantly better performance during the OBT task during synchronous versus asynchronous cardio-visual stimulation. Moreover, we found a significant positive correlation between empathic ability and the synchrony effect. We conclude that synchronous cardio-visual stimulation between the participant’s body and a virtual body during an OBT task makes it easier to adopt the virtual body’s perspective, presumably based on multisensory integration processes. However, this effect depended on empathic ability, suggesting that empathy, interoception and social perspective taking are inherently linked. (shrink)

In timing perception studies, the timing of one event is usually manipulated relative to another, and participants are asked to judge if the two events were synchronous, or to judge which of the two events occurred first. Responses are analyzed to determine a measure of central tendency, which is taken as an estimate of the timing at which the two events are perceptually synchronous. When these estimates do not coincide with physical synchrony, it is often assumed that the (...) sensory signals are asynchronous, as though the transfer of information concerning one input has been accelerated or decelerated relative to the other. Here we show that, while this is a viable interpretation, it is equally plausible that such effects are driven by shifts in the criteria used to differentiate simultaneous from asynchronous inputs. Our analyses expose important ambiguities concerning the interpretation of simultaneity judgement data, which have hitherto been underappreciated. (shrink)

The free-energy principle (FEP) builds on an assumption that sensor–motor loops exhibit Markov blankets in stationary state. We argue that there is rarely reason to assume a system's internal and external states are conditionally independent given the sensorimotor states, and often reason to assume otherwise. However, under mild assumptions internal and external states are conditionally independent given the sensorimotor history.

This paper distinguishes between synchronic responsibility (SR) and diachronic responsibility (DR). SR concerns an agent’s responsibility for an act at the time of the action, while DR concerns an agent’s responsibility for an act at some later time. While most theorists implicitly assume that DR is a straightforward matter of personal identity, I argue instead that it is grounded in psychological connectedness. I discuss the implications this distinction has for the concepts of apology, forgiveness, and punishment as well (...) as the way in which this distinction can be used to defend quality of will accounts of responsibility against objections involving psychological manipulation. I argue that the intuition that a manipulated agent is not responsible can be explained by appeal to the conditions of DR and, as such, does not unproblematically shed light on the conditions of SR. (shrink)

The concept of simultaneity and contemporaneity is fundamental to and the core of my artistic practice but it also fits perfectly with the theme of my research. Creating multimedia art and installations with the help of new media is one way to best express the concept of non-separation, as evidenced by language itself. In Italian the word confusione, from the Latin term cunfusionem (mixing, blending), and in English confusion, is often used as a synonym for noise. In English, commotion is (...) a synonym for blare, and it has been derived from the Latin word cum movere, which means moving together. Contemporary art and installation are both staticity and change intermingled in a single place and time. The study of crowd, and the emotion that emerges from the deep immersive experiencing of art, is also strongly linked to another concept developed by Bergson: intuition. By ‘intuition’, Bergson meant an elementary, indivisible experience of sympathy, through which a person is moved into the inner being of an object and can comprehend what is unique and indefinable in it. I hypothesize the presence and expression of emotion in the collective experience of installation art, and both my creative efforts and theoretical research are aimed at facilitating the audience’s understanding or intuition of this emotion in an immersive multisensory environment. Using a range of both technological and classical tools and means of expression in my work, but more generally, artists create a product that can mediate and unfold the complexity of the phenomenological event by rendering it in a new form accessible to all. (shrink)

Over the past fifteen years, progress in distance learning and digital engineering has led to the emergence of so-called " hybrid " systems bringing together different modalities: face-to-face, distance learning, individual, collective, synchronous, or asynchronous. Our study, a survey of stakeholders in five hybrid didactic training systems for beginner teachers, explores how the efficiency and effectiveness of such hybrid systems result from the synchronization of rhythmicities experienced, constructed, or to be created. Do these rhythmicities thus created give the (...) whole a kind of temporal ecology aiming, for beginner teachers, to balance: the constrained times and rhythms of the path (more mechanistic scheme); or the times and rhythms constructed and conquered by the participants themselves (more emancipatory scheme)? Three ideal types of trainee-users of the system and to put forward the hypothesis of a search for eurythmy by the latter, regulating their representations, behavior, and activities vis-à-vis the system. (shrink)

We talk of the differences between the old Camus and the new Camus. Often such talk is equivalent to talk of the differences between Camus’ old self and Camus’ new self, between Camus’ diachronous selves. In other contexts, contexts which I shall ignore, the old and the new Camus is something we can read, provide literary criticism of, ponder over. In these contexts it is to the literary works of the old and new Camus that we are referring. The same (...) kind of ambiguity attaches to the expressions ‘the early Beethoven’ and ‘the later Beethoven’. (shrink)

Among the claims made for online learning is its potential to foster critical thinking, particularly by engaging students in asynchronous discussions conducted in writing. This paper reviews and critiques these claims. It first examines the uses of writing and classroom discussion in modeling and encouraging critical thinking. It then reviews some of the arguments for the possible advantages of online interaction over face-to-face discussion. Finally, it critiques these claims by comparing the specific features, which distinguish the experience of participation (...) in asynchronous written discussions from synchronous oraldiscussion. This comparison illuminates the role of oral discussion in modeling and developing students’ critical thinking skills and points out difficulty of doing so through asynchronous computer-mediated discussions. (shrink)

This investigation examined age-related differences in auditory-visual integration as reflected on perceptual judgments of temporally misaligned AV English sentences spoken by native English and native Spanish talkers. In the detection task, it was expected that slowed auditory temporal processing of older participants, relative to younger participants, would be manifest as a shift in the range over which participants would judge asynchronous stimuli as synchronous. The older participants were also expected to exhibit greater declines in speech recognition for (...) class='Hi'>asynchronous AV stimuli than younger participants. Talker accent was hypothesized to influence listener performance, with older listeners exhibiting a greater narrowing of the AV simultaneity window and much poorer recognition of asynchronous AV foreign-accented speech compared to younger listeners. Participant groups included younger and older participants with normal hearing and older participants with hearing loss. Stimuli were video recordings of sentences produced by native English and native Spanish talkers. The video recordings were altered in 50 ms steps by delaying either the audio or video onset. Participants performed a detection task in which they judged whether the sentences were synchronous or asynchronous, and performed a recognition task for multiple synchronous and asynchronous conditions. Both the detection and recognition tasks were conducted at the individualized signal-to-noise ratio corresponding to approximately 70% correct speech recognition performance for synchronous AV sentences. Older listeners with and without hearing loss generally showed wider AV simultaneity windows than younger listeners, possibly reflecting slowed auditory temporal processing in auditory lead conditions and reduced sensitivity to asynchrony in auditory lag conditions. However, older and younger listeners were affected similarly by misalignment of auditory and visual signal onsets on the speech recognition task. This suggests that older listeners are negatively impacted by temporal misalignments for speech recognition, even when they do not notice that the stimuli are asynchronous. Overall, the findings show that when listener performance is equated for simultaneous AV speech signals, age effects are apparent in detection judgments but not in recognition of asynchronous speech. (shrink)

Sociological studies of work and time have argued that academic temporalities are increasingly rationalized and rendered accountable, resulting in a divergence of planned and experienced time in academic work. Shared research facilities that provide platform technologies to large user pools are no exception to this, as its administrations seek to increase the profitability of limited instrument time. Based on an ethnographic study of three facilities at an American university, this article examines how diverging rhythms are enacted in (...) organizational schedules and instrument work and kept aligned on the laboratory floor. Drawing insights from time studies and repair sociology, I argue that although technologies of time accounting provide powerful templates for action, they become effective only through ongoing “synchronization” work. Synchronization calls attention to discrete techniques and work practices, such as the adjustment of users’ bodies, user expectations, or work processes, that technical staff draw upon to resolve slippages between organizational rhythms and the temporal realities of data collection. This analysis suggests that technicians’ local and embodied practices not only affect their own professional roles but also organizational stability and productivity in time-sensitive environments. (shrink)

Synchronic and diachronic unity of consciousness and their in­terrelation pose interdisciplinary problems that can only be addressed by the combined means of philosophical and scien­tific theories. In the first part of the article the author briefly reviews psychological and materialistic accounts of personal identity. Historically these accounts were introduced to solve the problem of diachronic identity of persons, i.e., the problem of their persistence through time. She argues that they don’t explain how synchronic unity of consciousness, subjectively experienced as (...) the unity of the phenomenal field, correlates with diachronic identity of persons. In the second part of the article the author reviews Tim Bayne’s “virtual phenomenalism”. In the third part of the article she formulates two questions that virtual phenomenalism has to answer in order to solve the problems that face both the psychological and the materialistic accounts of personal identity. The first question concerns some cognitive and neurobiological characteristics of consciousness that Bayne invokes in order to propose an original solution of the problem of the synchronic unity of consciousness. It might be asked whether the same characteristics can undermine Bayne’s solution of the problem of the diachronic unity of consciousness. The second question is a development of Bernard Williams’ arguments against psychological accounts of personal identity. The author suggests that similar arguments can be used against virtual phenomenalism. (shrink)

According to EJ Lowe, diachronic necessity and synchronic necessity are logically independent. Diachronic possibility concerns what could happen to an object over time and therefore concerns future possibilities for that object given its past history. Synchronic possibility concerns what is possible for an object in the present or at a past present moment. These are logically independent, given certain assumptions. While it may true that because I am 38, it is impossible diachronically for me to be 30 (at least (...) once we restrict the degree of relevant possibility), it is possible, given that at some point in the past, I may have been conceived slightly earlier than I was, that I am now 37. Likewise, it is possible diachronically for me to be somewhere other than where I am, but given that one object cannot be in different places at the same time, it is impossible for me now to be somewhere other than where I am, and this is true at each past point in my history too. There are, then, two axis upon which to distinguish what is and is not possible: tensed possibilities and possibilities of degree, which include nomic, metaphysical, and logical necessities, among others. I examine the interactions between these possibilities and I come to the conclusion that logical necessity is not in fact logical necessity simpliciter. Whether something is logically necessary depends upon tensed possibilities. I argue that while synchronic logical necessity entails diachronic logical necessity, the reverse entailment does not hold. I explore the consequences of this for certain philosophical debates in semantics including the concept of rigid designation, and descriptive names. (shrink)

This article attempts to foreground the importance of everyday life and habit to the reproduction of national identities. Taking issue with dominant linear depictions of the time of the nation, which have over-emphasized ‘official’ histories, tradition and heroic narratives, this article foregrounds the everyday rhythms through which a sense of national belonging is sustained. The article focuses upon institutionalized schedules, habitual routines, collective synchronicities and serialized time-spaces to develop an argument that quotidian, cyclical time is integral to (...) national identity. In conclusion, accounts that discuss the increasing dominance of a postmodern global time are argued to be hyperbolic, since the nation remains a powerful, if more flexible constituent of identity. (shrink)

Synchronicity IIn the summer of 2006, I read several books by well-known existential psychiatrist and insightful novelist Irvin Yalom.2 They were all thought-provoking and mightily entertaining. Dr. Yalom sustains lively interests in philosophical aspects of psychiatry, as well as in psychiatric aspects of philosophy. Among other works, he has written two profoundly philosophical novels, namely The SchopenhauerCure and When Nietzsche Wept, in which he has delved deeply and creatively into the psyches of these two outstanding thinkers via the refracting media (...) of literary and historical fiction, and through lenses of eclectic existential psychiatry.Yalom’s fictive excursions are not confined to philosophical realms—far from it. In a delightfully ironic novel entitled Lying on the Couch Yalom takes to task some perennially unfinished business of psychoanalysis, namely analysts’ perpetual struggles with counter-transference issues. Even the most seasoned psychoanalysts, so Yalomartfully reveals, have not yet had their own egos sufficiently shrunk. In consequence, they are apt to experience all kinds of problems with patients, and not always of the patients’ making. To be sure, patients are wont to deceive their analysts at times, whether subconsciously, diffidently, or maliciously. And analysts themselves are prone to all the vanities catalogued by Ecclesiastes in antiquity,3 egoisms and egotisms alike that appear innately rooted in the human psyche, and which inevitably contribute to self-deception. If an analyst’s vanities, self-deceptions, and unresolved counter-transferences were skillfully exploited by a professional con-artist posing as a patient, personal and professional mayhemwould result. This is one of the conspicuous threads in the rich tapestry of untruths, vanities and self deceptions that Yalom weaves in Lying on The Couch.One particular episode in Yalom’s novel rather jarred me when I encountered it in August 2006, because it coincided with an uncannily similar episode that was unfolding in my own life at precisely the same time. (shrink)

My paper has two aims: to underscore the importance of differently time-indexed ‘ought implies can’ principles; and to apply this to the culpable inability problem. Sometimes we make ourselves unable to do what we ought, but in those cases, we may still fail to do what we ought. This is taken to be a serious problem for synchronic ‘ought implies can’ principles, with a simultaneous ‘ought’ and ‘can’. Some take it to support diachronic ‘ought implies can’, with a potentially (...) temporally distinct ‘ought’ and ‘can’. I will argue that this problem is not avoided by diachronic ‘ought implies can’. (shrink)

Neurons encode and transmit signals through chemical synaptic or electrical synaptic connections in the actual nervous system. Exploring the biophysical properties of coupling channels is of great significance for further understanding the rhythm transitions of neural network electrical activity patterns and preventing neurological diseases. From the perspective of biophysics, the activation of magnetic field coupling is the result of the continuous release and propagation of intracellular and extracellular ions, which is very similar to the activation of chemical synaptic coupling through (...) the continuous release of neurotransmitters. In this article, an induction coil is used to connect two HR neurons to stimulate the effect of magnetic field coupling. It is inevitable that time delays can affect the coupling process in the transmission of information, and it should be considered in the coupled model. Firstly, the firing characteristics and bifurcation modes of two coupled HR neurons are studied by using one parameter and two parameters bifurcation. With the increase of propagation delay and coupling gain, the chaotic state of neurons disappears and the high-period window decreases due to the influence of energy transfer between neurons. Then, the synchronization patterns of two HR neurons with different stimulation are analyzed by error diagrams and time series diagrams. It is confirmed that the synchronous pattern has certain regularity and is related not only to the neurons with large stimulation current but also to the time delay and coupling gain. The research conclusions of this article will provide the corresponding theoretical basis for medical experiments. (shrink)

In this paper, an intelligent neural network-based controller is designed and implemented to control the speed of a permanent magnet synchronous motor. First, the exact mathematical model of PMSM is presented, and then, by designing a controller, we apply the wind turbine emulation challenges. The designed controller for the first time is implemented on a Arm Cortex-M microcontroller and tested on a laboratory PMSM. Since online learning neural network on a chip requires a strong processor, high memory, and (...) convergence guarantee, this article uses the offline method. In this method, first, for different work points, the neural network is trained by local controllers, and then, the trained network is implemented on the chip and used. Uncertainty in the parameters and the effect of load torque as challenges of control systems are applied in the proposed method, and a comparison with other methods is performed in the implementation results section. (shrink)

There are two different varieties of question concerning the unity of consciousness: questions about unity at a time, and unity over time. A recent trend in the debate about unity has been to attempt to provide a ‘generalized’ account that purports to solve both problems in the same way. This attempt can be seen in the accounts of Barry Dainton and Michael Tye. In this paper, I argue that there are crucial differences between unity over time and (...) unity at a time that make it impossible to provide a generalized account of unity. The source of these crucial differences is the phenomenon of the ‘continuity of consciousness’. I argue that accounts of unity over time have to provide an account of this continuity, and that there is no phenomenon analogous to continuity in the case of unity at a time. Attention to the continuity of consciousness reveals crucial structural differences between the two varieties of unity. These structural differences make it impossible to provide a generalized account of unity. I show that the problems faced by Dainton’s and Tye’s accounts in the light of the structural differences make their accounts of unity appear far less appealing than they might initially have looked. I conclude by noting that, in the light of the important differences between the two varieties of unity, it is a mistake to attempt to model accounts of unity over time on accounts of unity at a time. (shrink)

We have, to some extent, a duty to help the needy—to meet their basic needs for food, water, shelter, and health care. Call this the duty of beneficence. Below, I argue that it is best understood as a duty both (a) to adopt helping the needy as “a serious, major, continually relevant, life-shaping end” (HILL 2002, 206) and (b) to never behave in a way (via act or omission) that’s factually incompatible with having such an end. (Behaving in a given (...) way is factually incompatible with having an end if and only if someone who knows all the relevant facts couldn’t behave in this way and still count as having this end—at least not if they have both all the other ends that they’re required to have and only those other ends that they’re permitted to have.) I call this the Kantian View, and I argue that it has several advantages over four of its rivals. In particular, I argue that it has the advantage of being able to account for all the following: (1) a diachronic (over-time) duty to take a sufficient number of favorable opportunities for helping the needy over the course of our lives, (2) a synchronic (at-a-time) duty to take every golden opportunity to help the needy that arises, and (3) the relationship between the two. (shrink)

Does a free agent have the power to will otherwise even at the very moment she is making a particular free choice? That is, when one is freely making some choice at a time T, does one also have the power to refrain from so choosing at T? The diachronic account of contingency and freedom says “no,” while the synchronic account says “yes.” In this paper I first address William Hasker’s criticisms of my earlier presentation of the synchronic account, (...) and then present an argument against the diachronic account. If successful, my arguments offer support for the compatibility of human freedom and divine foreknowledge. (shrink)

Objectives: Machine learning (ML) has the potential to facilitate “continual learning” in medicine, in which an ML system continues to evolve in response to exposure to new data over time, even after being deployed in a clinical setting. In this article, we provide a tutorial on the range of ethical issues raised by the use of such “adaptive” ML systems in medicine that have, thus far, been neglected in the literature. -/- Target audience: The target audiences for this tutorial (...) are the developers of ML AI systems, healthcare regulators, the broader medical informatics community, and practicing clinicians. -/- Scope: Discussions of adaptive ML systems to date have overlooked the distinction between 2 sorts of variance that such systems may exhibit—diachronic evolution (change over time) and synchronic variation (difference between cotemporaneous instantiations of the algorithm at different sites)—and underestimated the significance of the latter. We highlight the challenges that diachronic evolution and synchronic variation present for the quality of patient care, informed consent, and equity, and discuss the complex ethical trade-offs involved in the design of such systems. (shrink)

What does it mean to teach, live, and imagine one’s futures amidst a global pandemic? How to respond to the reality of unequal and overlapping crises, COVID-19 being one of them? Can alternative understandings of time help us create a more just post-pandemic university? Drawing on environmental humanities, disaster and critical time studies, in conversation with qualitative data, this article theorizes a ‘pedagogy of scale’: a practical and conceptual centering on multiple temporalities and diverse interpretative frames. The analysis (...) argues for the need to attend to overlapping, non-linear, and changeable scales of time, reference, and meaning that students draw on in order to make sense of crises: every crisis, even as unprecedented as COVID-19, is embedded in environmental processes, long-term vulnerabilities and injustices. These overlooked and overlapping scales interweave personal, planetary, and theological notions of time—from ecological deep time to the divine time—meaning, and self. In its focus on asynchronicity, overlap and multiplicity, the analysis extends current theorizations of temporality and crisis in higher education, challenges paradigms of mastery, advocates for epistemic plurality, and embraces decolonial notions of human subjectivity, providing a much-needed critical model for the post-pandemic university. (shrink)

It is unclear whether someone’s responsibility for developing a disease or maintaining his or her health should affect what healthcare he or she receives. While this dispute continues, we suggest that, if responsibility is to play a role in healthcare, the concept must be rethought in order to reflect the sense in which many health-related behaviours occur repeatedly over time and are the product of more than one agent. Most philosophical accounts of responsibility are synchronic and individualistic; we indicate (...) here what paying more attention to the diachronic and dyadic aspects of responsibility might involve and what implications this could have for assessments of responsibility for health-related behaviour. (shrink)

A two-body quantum correlation is calculated for a particle reflecting from a moving mirror. Correlated interference results when the incident and reflected particle substates and their associated mirror substates overlap. Using the Copenhagen interpretation of measurement, an asynchronous joint probability density, which is a function both of the different positions and different times at which the particle and mirror are measured, is derived assuming that no interaction occurs between each measurement. Measurement of the particle first, in the correlated interference (...) region, results in a splitting of the mirror substate into ones which have and have not reflected the particle. An analog of the interference from the Doppler effect for only measurements of the particle, in this two-body system, is shown to be a consequence of the asynchronous measurement. The simplification obtained for a microscopic particle reflecting from a mesoscopic or macroscopic mirror is used to illustrate asynchronous correlation interferometry. In this case, the small displacement between these mirror states can yield negligible environmental decoherence times. In addition, interference of these mirror states does not vanish in the limit of large mirror mass due to the small momentum exchange in reflecting a microscopic particle. (shrink)

COVID-19 forced many institutions of higher learning to make a sudden switch from face-to-face classes to emergency remote learning. This move was welcomed with mixed reactions by first year students. The purpose of this study was to investigate first year students’ experiences of emergency remote learning amidst the time of the global pandemic of COVID-19 in the United Arab Emirates. The study adopted a qualitative approach within an interpretivist paradigm and it was conducted as an exploratory case study in (...) a federal university. Three hundred and ninety two open-ended questionnaires were completed by first year students about their experiences of emergency remote learning. Data was analysed using content analysis. It was concluded that the best way to judge the validity of emergency remote learning is by taking context into consideration. The use of different online teaching strategies help cater for diverse needs of first year students and reduce dropout rates. (shrink)

I have advocated a time-slice-centric model of rationality, according to which there are no diachronic requirements of rationality. Podgorski challenges this picture on the grounds that temporally extended mental processes are epistemically important, rationally evaluable, and governed by diachronic requirements. I argue that the particular cases that Podgorski marshals to make his case are unconvincing, but that his general challenge might motivate countenancing rational requirements on processes like reasoning. However, so long as such diachronic requirements are merely derivative of (...) more fundamental synchronic requirements, so that a pattern of reasoning counts as rational or irrational only in so far as it tends to lead one to better satisfy these fundamental synchronic requirements, we can meet Podgorski’s challenge without significantly deviating from a time-slice-centric approach to epistemology. (shrink)

Hidden in Historicism considers how the nineteenth-century philosophy of historicism depicts three "forgotten time regimes": a time of rise and fall, an ambiguous time of synchronicity of the non-synchronous, and a time in which decisive moments dominate. Before the eighteenth century, time was past-oriented. This inversed in the Enlightenment, when the future became dominating. Today, this time of progress continues to be embraced as a "time of the modern". Yet, inequality, increasing violence (...) and climate change lead to doubts over a bright future. In this book, Harry Jansen moves away from the heritage of Reinhart Koselleck and his single time of the modern towards a historicist, threefold temporal approach to history writing. In the time regime of the twenty-first century past, present and future coexist. It is a heterogeneous time that takeson the three forms of historicism. Jansen's study shows how all three times exist together in current historiography and contribute to a better understanding of the world today. Based on the idea that an incarnated time rules everything that happens it reality, the book offers a fresh perspective on the ongoing discussion about time and time regimes in contemporary philosophy and theory of history for students and scholars, both time specialists and the non-specialist. (shrink)

Two-dimensional coupled map lattices have global stability properties that depend on the coupling between individual maps and their neighborhood. The action of the neighborhood on individual maps can be implemented in terms of ‘‘causal’’ coupling (to spatially distant past states) or ‘‘non-causal’’ coupling (to spatially distant simultaneous states). In this contribution we show that globally stable behavior of coupled map lattices is facilitated by causal coupling, thus indicating a surprising relationship between stability and causality. The influence of causal versus non-causal (...) coupling for synchronous and asynchronous updating as a function of coupling strength and for different neighborhoods is analyzed in detail. r 2004 Elsevier B.V. All rights reserved. (shrink)

Carl Jung coined the term "synchronicity" to describe meaningful coincidences that conventional notions of time and causality cannot explain. Working with the great quantum physicist Wolfgang Pauli, Jung sought to reveal these coincidences as phenomena that involve mind and matter, science and spirit, thus providing rational explanations for parapsychological events like telepathy, precognition, and intuition. Synchronicity examines the work of Jung and Pauli, as well as noted scientists Werner Heisenberg and David Bohm; identifies the phenomena in ancient and modern (...) mythologies, particularly the Greek legend of Hermes the Trickster; and illustrates it with engaging anecdotes from everyday life and literature. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Time’s Causal Power: Proclus and the Natural Theology of Time by Antonio Luis Costa VargasM. MartijnVARGAS, Antonio Luis Costa. Time’s Causal Power: Proclus and the Natural Theology of Time. Boston: Brill, 2021. i + 231 pp. Cloth and eBook, $162.00The metaphysics of time in Neoplatonism tends to be described top-down: From transcendent eternity, time as we know it emanates. This is hardly (...) informative about the nature of time as such, however. Vargas’s monograph about Proclus’s theory of time instead takes a bottom-up approach: From the effects of time, he ascends to transcendent and divine Time as their cause—a natural theology. In the process, we learn that the key element of Proclus’s theory is that Time, which orders events and distributes “lifetimes,” provides us with the possibility of understanding the world as an ordered, intelligible whole.The book contains four chapters providing a genealogy of sorts by systematically laying out Proclus’s inspiration from the philosophy of time in Plato, Aristotle, the Stoics, and Plotinus respectively. Chapter 1 starts from Plato’s Timaeus and the distinction between the “order of time” and the “flow of time.” The order of time is the intelligible, transcendent substance that causes the “flow of time,” that is, time as change. From the Republic, Proclus harvests “true Number” as determining the former, and the motions of the heavenly bodies dispensing lifespans to all beings as determining the latter. [End Page 732]Chapter 2 starts from Aristotle’s criticism of Platonic time as motion: A motion belongs to a specific substance, but time should be omnipresent. Vargas shows how Aristotle’s understanding of change, causality, and time helps Proclus shape the order of time as a cosmic intelligence that makes the world intelligible through the number by which its processes are measured. In this chapter, Vargas presents a beautiful and rich analysis of how Neoplatonists adopt elements from Aristotle’s physics, psychology, and biology in order to build their Platonic notion of time as “number that counts” or productive number. In Neoplatonic terms: Aristotle’s first intellect as first mover becomes the substantial Order of Time in Proclus, the transcendent monad, and his lower movers become the chain of emanated lower times as kinds of intelligence.In chapter 3, Stoic biology helps elaborate the understanding of time as the order within the cosmos, the world as a living being, and contributes the idea of one simultaneous present or “now” for everything. This cosmic life helps counter Aristotle’s criticism: All motions belong to specific substances but are part of the life of the cosmos. Vargas here also brings in an interesting link to more recent discussions in physics concerning the nature of simultaneity: How do we know whether things occurring far away from each other are simultaneous? The cosmic “now” and the notion of sympathy, which Proclus finds in synchronous processes, provide a metaphysical framework for such simultaneity.In chapter 4, Plotinus’s contribution to Proclus’s theory is discussed: the flow of time as the life of the world soul, which underlies all life in the cosmos and ties it together. It consists in the presence in the soul of the effects, that is, the external activity, of the emanated internal activity of Intelligence. Intelligence, according to Plotinus, must be alive because it is fully active, and its emanation in the world soul leads to the soul’s own external activity, that is, its uniform and discursive production of the world. This external activity is time in the strictest sense of the word. The main difference between Plotinus and Proclus is that for Proclus the flow of time is inferior to the eternal life of the world soul, belonging to its external activity, but for Plotinus it coincides with the world soul. Another interesting difference Vargas highlights is that, where Plotinus denied the possibility of time being a number of changes because of the eternity of the world soul’s production, Proclus instead ascribed it countable infinity resulting from the everlasting repetitions of the Great Year.Vargas’s analyses contain very rich and detailed discussions of metaphysical issues such as the Aristotelian difference... (shrink)

Many requirements of rationality rely for their application on facts about identity at a time. Take the requirement not to have contradictory beliefs. It is irrational if a single agent bel...

Parmenides believed that he had found the most reliable way of theorizing about ultimate reality. While natural philosophers conceptualized phenomenal differences to explain cosmic change, Parmenides used the least meaningful but most versatile verb in Ancient Greek to engage in a purely intellectual exploration of reality – one that transcended synchronous and asynchronous differences. In this article I explain how the verb εἰμί was useful to Parmenides in his attempt to overcome natural philosophy. First, I argue that the (...) Eleatic philosopher regarded νοεῖν and εἶναι as equivalent because εἰμί-clauses enabled him to express arguably any conceivable content without providing significant additional meaning. I then show that Parmenides’ concept of being implies the present tense and the imperfective aspect but is grounded in the lexical content of the verb εἰμί, which entails no inherent temporal limits. This explains why ἔστι, ἐόν, and εἶναι could be used to indicate unbounded actuality, regardless of whether these forms represented lexical predicates or auxiliaries for predication. Finally, I maintain that the suitability of εἰμί for talking about all kinds of things without introducing temporal limits allowed Parmenides to avoid what he saw as two mistakes made by natural philosophers: identifying ultimate reality with something that cannot cover the full extent of thought and confusing actuality with present occurrence. (shrink)

This essay argues that an alternative conception of time to that underlying the ideology of productivism and growth is not only possible, but desirable. The creation of this time requires what I refer to as the practice of refusal via taking time: the self-determined arrangement of the nexus of time, action and utility that begins with the a-synchronous insertion of unproductive time into the synchronous horizontal time of productivism. The essay is divided (...) into three sections. The first offers the reader a discussion of Jacques Rancière’s notion of time as a social and political medium that partitions and distributes actions and utility. The subsequent section of the essay elaborates in aesthetic terms an account of unproductive time that is indifferent to the time of productivism. In the final section, I discuss examples that show how taking time to do ‘nothing’ can elicit an emancipatory politics that seeks to liberate us from the hegemony of productivism. I conclude that political theory should attend to time as a political medium and to the possibilities of its occupation, and that picturing the taking of time in terms of stopping the force of productivism’s normalized horizontal time by entering the unproductive time of reverie and aesthetic experience, provides a promising perspective from which to apprehend a time for thriftless refusals, deliberate dis-identifications, and the forging of cooperation among people(s) and with nature. (shrink)

The plural, impure or discordant nature of time has become an important theme in recent critical social and political theory. Against Althusser’s dismissal of Sartre’s presumedly Hegelian understanding of time and history, this article establishes Jean-Paul Sartre as a key figure in this debate on the plurality of temporalities. Especially in the Critique of Dialectical Reason, Sartre understands history and the social in terms of a multiplicity of uneven and non-synchronous temporalisations, rejecting an notion of time (...) as a universal container within which events take place. The originality of Sartre’s approach is that it establishes a link between the notion of the plurality of temporalities and the problem of freedom and domination. His mature social and political theory allows us to understand temporalisation as a strategy for domination, and objective social temporality as key to a form of anonymous or structural domination. A reconstruction of this highly complex and sophisticated approach to thinking domination through time can also shed an original light on the temporal dimension of democracy and totalitarianism. (shrink)

Temporal epistemic logics are known, from results of Halpern and Vardi, to have a wide range of complexities of the satisfiability problem: from PSPACE, through non-elementary, to highly undecidable. These complexities depend on the choice of some key parameters specifying, inter alia, possible interactions between time and knowledge, such as synchrony and agents' abilities for learning and recall. In this work we develop practically implementable tableau-based decision procedures for deciding satisfiability in single-agent synchronous temporal-epistemic logics with interactions between (...) time and knowledge. We discuss some complications that occur, even in the single-agent case, when interactions between time and knowledge are assumed and show how the method of incremental tableaux can be adapted to work in EXPSPACE, respectively 2EXPTIME, for these logics, thereby also matching the upper bounds obtained for them by Halpern and Vardi. (shrink)