In my dissertation I critically survey existing theories of time consciousness, and draw on recent work in neuroscience and philosophy to develop an original theory. My view depends on a novel account of temporal perception based on the notion of temporal qualities, which are mental properties that are instantiated whenever we detect change in the environment. When we become aware of these temporal qualities in an appropriate way, our conscious experience will feature the distinct temporal phenomenology that is associated (...) with the passing of time. The temporal qualities model of perception makes two predictions about the mechanisms of time perception; one that time perception is modality specific and the other that it can occur without awareness. My argument for this view partially depends on a number of psychophysical experiments that I designed and implemented myself and which investigate subjective time distortions caused by looming visual stimuli. These results show that the mechanisms of conscious experience of time are distinct from the mechanisms of time perception, as my theory of temporal qualities predicts. (shrink)

Tim Bayne draws on philosophy, psychology, and neuroscience in defence of the claim that consciousness is unified. He develops an account of what it means to say that consciousness is unified, and then applies this account to a variety of cases - drawn from both normal and pathological forms of experience - in which the unity of consciousness is said to break down. He goes on to explore the implications of the unity of consciousness (...) for theories of consciousness, for the sense of embodiment, and for accounts of the self. The Unity of Consciousness draws on a wide range of findings within philosophy and the sciences of the mind to construct an account of the unity of consciousness that is both conceptually sophisticated and scientifically informed. (shrink)

The unity of consciousness has so far been studied only as a relation holding among the many experiences of a single subject. I investigate whether this relation could hold between the experiences of distinct subjects, considering three major arguments against the possibility of such ‘between-subjects unity’. The first argument, based on the popular idea that unity implies subsumption by a composite experience, can be deflected by allowing for limited forms of ‘experience-sharing’, in which the same token (...) experience belongs to more than one subject. The second argument, based on the phenomenological claim that unified experiences have interdependent phenomenal characters, I show to rest on an equivocation. Finally, the third argument accuses between-subjects unity of being unimaginable, or more broadly a formal possibility corresponding to nothing we can make sense of. I argue that the familiar experience of perceptual co-presentation gives us an adequate phenomenological grasp on what between-subjects unity might be like. (shrink)

According to conventional wisdom, the split-brain syndrome puts paid to the thesis that consciousness is necessarily unified. The aim of this paper is to challenge that view. I argue both that disunity models of the split-brain are highly problematic, and that there is much to recommend a model of the split-brain—the switch model—according to which split-brain patients retain a fully unified consciousness at all times. Although the task of examining the unity of consciousness through the lens (...) of the split-brain syndrome is not a new one—such projects date back to Nagel’s seminal paper on the topic—the time is ripe for a re-evaluation of the issues. (shrink)

Human consciousness usually displays a striking unity. When one experiences a noise and, say, a pain, one is not conscious of the noise and then, separately, of the pain. One is conscious of the noise and pain together, as aspects of a single conscious experience. Since at least the time of Immanuel Kant (1781/7), this phenomenon has been called the unity of consciousness . More generally, it is consciousness not of A and, separately, of B (...) and, separately, of C, but of A-and-B- and-C together, as the contents of a single conscious state. (shrink)

Consciousness has many elements, from sensory experiences such as vision and bodily sensation, to nonsensory aspects such as memory and thought. All are presented as experiences of a single subject, and all seem to be contained within a unified field of experience. This unity raises many questions: How do diverse systems in the brain co-operate to produce a unified experience? Are there conditions under which this unity breaks down? Is conscious experience really unified at all? Such questions (...) are addressed in this thought-provoking book. (shrink)

This report highlights and explores five questions which arose from The Unity of Consciousness and Sensory Integration conference at Brown University in November of 2011: 1. What is the relationship between the unity of consciousness and sensory integration? 2. Are some of the basic units of consciousness multimodal? 3. How should we model the unity of consciousness? 4. Is the mechanism of sensory integration spatio-temporal? 5. How Should We Study Experience, Given Unity (...) Relations? (shrink)

It is common to hold that our conscious experiences at a single moment are often unified. But when consciousness is unified, what are the fundamental facts in virtue of which it is unified? On some accounts of the unity of consciousness, the most fundamental fact that grounds unity is a form of singularity or oneness. These accounts are similar to Newtonian views of space according to which the most fundamental fact that grounds relations of co-spatiality between (...) various points (or regions) of a space is the fact that these points (or regions) are parts of the same single space. In this paper, I sketch and defend an alternative account of unity of consciousness. Very roughly, the view holds that experiences are unified when they are connected in the right way. In this respect, the view is analogous to Leibnizian views of space according to which the oneness of space emerges from certain conditions over spatial relations. The Leibnizian alternative has significant implications for our understanding of the metaphysics of conscious experience, the cognitive architecture of the mind and our assessment of the conditions under which unity of consciousness breaks. (shrink)

At any given time, a subject has a multiplicity of conscious experiences. A subject might simultaneously have visual experiences of a red book and a green tree, auditory experiences of birds singing, bodily sensations of a faint hunger and a sharp pain in the shoulder, the emotional experience of a certain melancholy, while having a stream of conscious thoughts about the nature of reality. These experiences are distinct from each other: a subject could experience the red book without the singing (...) birds, and could experience the singing birds without the red book. But at the same time, the experiences seem to be tied together in a deep way. They seem to be unified, by being aspects of a single encompassing state of consciousness. (shrink)

This paper concerns the role that reference to subjects of experience can play in individuating streams of consciousness, and the relationship between the subjective and the objective structure of consciousness. A critique of Tim Bayne’s recent book indicates certain crucial choices that works on the unity of consciousness must make. If one identifies the subject of experience with something whose consciousness is necessarily unified, then one cannot offer an account of the objective structure of (...) class='Hi'>consciousness. Alternatively, identifying the subject of experience with an animal means forgoing the conceptual connection between being a subject of experience and having a single phenomenal perspective. (shrink)

This article argues in defence of the minimal self and discusses the phenomenological objection to the Buddhist no-self view. It considers the distinction made by Miri Albahari between two forms of the sense of body ownership: personal ownership and perspectival ownership. It suggests that there is an important contrast between this Buddhist conception and the phenomenological conception of nonegological consciousness as found by Edmund Husserl and Jean-Paul Sartre.

The so-called unity of consciousness consists in the compelling sense we have that all our conscious mental states belong to a single conscious subject. Elsewhere I have argued that a mental state's being conscious is a matter of our being conscious of that state by having a higher-order thought (HOT) about it. Contrary to what is sometimes argued, this HOT model affords a natural explanation of our sense that our conscious states all belong to a single conscious subject. (...) HOTs often group states together, so that each HOT is about a cluster of target states; single HOTs represent qualitative states as spatially unified and intentional states as unified inferentially. More important, each HOT makes one conscious of oneself in a seemingly immediate way, encouraging a sense of unity across HOTs. And the same considerations that make us assume that our first-person thoughts all refer to the same self apply also to HOTs; becoming conscious of our HOTs in introspection thus leads to a sense that our conscious states are unified in a single self. I argue that neither essential-indexical reference to oneself nor the alleged immunity to error through misidentification conflicts with this account. I close by discussing the apparent connection of unity with free agency. (shrink)

In "The Disunity of Consciousness," Gerard O'Brien and Jon Opie argue that human consciousness is not synchronically unified. They suggest that the orthodox conception of the unity of consciousness admits of two readings, neither of which they find persuasive. According to them, "a conscious individual does not have a single consciousness, but several distinct phenomenal consciousnesses, at least one for each of the senses, running in parallel." They call this conception of consciousness the _multi-track (...) account. I make three points in reply: (1) O'Brien and Opie's characterization of the orthodox conception of the unity of consciousness is problematic; (2) their arguments in support of the multitrack account are unpersuasive; and (3) the phenomenon of intersensory integration suggests that O'Brien and Opie are wrong to claim that "the only sense in which it is correct to talk of a 'unified' consciousness (...) is that in which the representational contents of the various components coincide.". (shrink)

Though there has been a huge resurgence of interest in consciousness in the past decade, little attention has been paid to what the philosopher Immanuel Kant and others call the unity of consciousness. The unity of consciousness takes different forms, as we will see, but the general idea is that each of us is aware of many things in the world at the same time, and often many of one's own mental states and of oneself (...) as their single common subject, too. (shrink)

The aim of this paper is to provide an interpretation for Sartre’s account of the unity of consciousness in The Transcendence of the Ego. I will argue that it is only once The Transcendence of the Ego is read alongside other texts written around the same time, such as The Imaginary, that we can understand how Sartre believes it is possible for consciousness to be unified without an I. I begin by setting out the Kantian context that (...) Sartre develops for his views, before looking at Sartre’s arguments themselves. I then turn to some of the difficulties other readers have encountered with making sense of the arguments of the Transcendence of the Ego. I argue that it is only in relation to Sartre’s account of what he calls the illusion of immanence in The Imaginary, that we can make sense of Sartre’s account of consciousness, before reconstructing what I take to be Sartre’s position drawing on Sartre’s references to Bergson and Spinoza. (shrink)

It is suggested that consciousness is primarily associated not with stimuli and perception, as commonly supposed, but with movement and responses. Consciousness of stimuli arises in situations in which possible movements are planned, or in which information must be actively acquired rather than passively registered, and may or may not require overt movements to be performed. By emphasizing response, this formulation provides a simple explanation for the perceived unity of consciousness: though stimuli can be diverse, with (...) independent components, movements must necessarily be coordinated. Therefore, if we are to look for a `site' for consciousness, it is likely to be in a region such as the anterior cingulate that is neurally close to the higher motor hierarchical levels, and also accessible both to real sensory feedback and also to virtual feedback derived through mechanisms of efference copy from actual or proposed motor commands. It is suggested that synchrony of arrival of such information may be an important prerequisite of this unity, and that on this basis such a `master node' might be expected to be temporally `equidistant' from each of these sources; this may well be true of the anterior cingulate, but no doubt also of other structures. (shrink)

: This paper argues for a distinction between possession of a unified consciousness and possession of a single stream of consciousness. Although the distinction has widespread applicability in discussions of the structure of consciousness and of pathologies of conscious experience, I will illustrate its importance primarily using the debate about consciousness in split-brain subjects, suggesting that those who have argued that split-brain subjects have two streams of consciousness apiece and those who have argued that they (...) have a unified consciousness may both be right. (shrink)

Hypnosis appears to generate unusual—and sometimes even astonishing—changes in the contents of consciousness. Hypnotic subjects report perceiving things that are not there, they report not perceiving things that are there, and they report unusual alterations in the phenomenology of agency. In addition to apparent alterations in the contents of consciousness, hypnosis also appears to involve alterations in the structure of consciousness. According to many theorists—most notably Hilgard—hypnosis demonstrates that the unity of consciousness is an illusion (...) (Hilgard 1977). (shrink)

This is an excerpt of a report that highlights and explores five questions which arose from The Unity of Consciousness and Sensory Integration conference at Brown University in November of 2011. This portion of the report explores the question: How should we model the unity of consciousness?

Brentano's thoughts on unity of consciousness are of central importance to an understanding of his psychology and of his ontology. By means of a reistic interpretation of his views on unity of consciousness, and in contrast with the Aristotelian approach to unity of consciousness, one begins to see the paradoxically objective and realistic spirit of Brentano's subjectivism in psychology.

The binding problem is frequently discussed in consciousness research. However, it is by no means clear what the problem is supposed to be and how exactly it relates to consciousness. In the present paper the nature of the binding problem is clarified by distinguishing between different formulations of the problem. Some of them make no mention of consciousness, whereas others are directly related to aspects of phenomenal experience. Certain formulations of the binding problem are closely connected to (...) the classical philosophical problem of the unity of consciousness and the currently fashionable search for the neural correlates of consciousness. Nonetheless, only a part of the current empirical research on binding is directly relevant to the study of consciousness. The main message of the present paper is that the science of consciousness needs to establish a clear theoretical view of the relation between binding and consciousness and to encourage further empirical work that builds on such a theoretical foundation. (shrink)

As part of his case for emergent dualism, William Hasker proffers a _unity-of-_ _consciousness_ (UOC) argument against materialism. I formalize the argument and show how the warrant for two of its premises accrues from the warrant one assigns to two distinct theses about unified conscious experience. I then argue that though both unity theses are plausible, the materialist has little to fear from Hasker.

(1997). The unity of consciousness, synchronization, and the collective dimension. World Futures: Vol. 48, The Concept of Collective Consiousness: Research Perspectives, pp. 141-150.

Philosophers and cognitive scientists address the relationships among the senses and the connections between conscious experiences that form unified wholes. In this volume, cognitive scientists and philosophers examine two closely related aspects of mind and mental functioning: the relationships among the various senses and the links that connect different conscious experiences to form unified wholes. The contributors address a range of questions concerning how information from one sense influences the processing of information from the other senses and how unified states (...) of consciousness emerge from the bonds that tie conscious experiences together. Sensory Integration and the Unity of Consciousness is the first book to address both of these topics, integrating scientific and philosophical concerns. A flood of recent work in both philosophy and perception science has challenged traditional conceptions of the sensory systems as operating in isolation. Contributors to the volume consider the ways in which perceptual contact with the world is or may be “multisensory,” discussing such subjects as the modeling of multisensory integration and philosophical aspects of sensory modalities. Recent years have seen a similar surge of interest in unity of consciousness. Contributors explore a range of questions on this topic, including the nature of that unity, the degree to which conscious experiences are unified, and the relationship between unified consciousness and the self. Contributors Tim Bayne, David J. Bennett, Berit Brogaard, Barry Dainton, Ophelia Deroy, Frederique de Vignemont, Marc Ernst, Richard Held, Christopher S. Hill, Geoffrey Lee, Kristan Marlow, Farid Masrour, Jennifer Matey, Casey O'Callaghan, Cesare V. Parise, Kevin Rice, Elizabeth Schechter, Pawan Sinha, Julia Trommershaeuser, Loes C. J. van Dam, Jonathan Vogel, James Van Cleve, Robert Van Gulick, Jonas Wulff. (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)

If we were to connect two individuals’ brains together, how would this affect the individuals’ conscious experiences? In particular, it is possible for two people to share any of their conscious experiences; to simultaneously enjoy some token experiences while remaining distinct subjects? The case of the Hogan twins—craniopagus conjoined twins whose brains are connected at the thalamus—seems to show that this can happen. I argue that while practical empirical methods cannot tell us directly whether or not the twins share conscious (...) experiences, considerations about the locality of content processing in the brain entails that they most likely do so. (shrink)

In the early modern period one can find unity of consciousness arguments in the writings of Rene Descartes and G. W. Leibniz, and in the recent literature they have been defended by David Barnett, William Hasker, and Richard Swinburne (among others). Descartes's unity of consciousness argument for dualism is to be found in the sixth of his Meditations on First Philosophy. Descartes claims that his unity of consciousness argument was itself sufficient to establish substance (...) dualism. Swinburne's central line of argument involves deploying a number of puzzle cases. He argues that our intuitions about these cases can be accommodated only by adopting a “further fact” view of the self, according to which the continued existence of a person over time consists in the continued existence of a mental substance, and “it is metaphysically possible that the substance acquires a totally new body, totally new apparent memories, and character”. (shrink)

Consciousness has many elements - from sensory experiences such as vision, audition, and bodily sensation, to nonsensory aspects such as volition, emotion, memory, and thought. With all these facets - how can consciousness appear to us as a unified experience? Is this apparent unity just an illusion? Why and when does this unity break down? In recent years many have attempted to answer this, one of the most puzzling and intriguing dimensions of consciousness. With chapters (...) from leading thinkers on consciousness, from psychology, neuroscience, and philosophy this is a thought-provoking book that attempts to answer some of the big questions. (shrink)

The enactivist account of consciousness posits that motivated activation of sensorimotor action imagery anticipates possible action affordances of environmental situations, resulting in representation of the environment with a conscious “feel” associated with the valences motivating the anticipations. This approach makes the mind–body problem and the problem of mental causation easier to resolve, and offers promise for understanding how consciousness results from natural processes. Given a process-oriented understanding of the way many systems in non-conscious nature are “proto-motivated” toward realizing (...) unactualized possibilities, and can use symbolic objects to “proto-represent” unactualized possibilities, it becomes more clear how self-organizing systems can subserve subjective consciousness. If a system executes, in a unified way, both a proto-desire and a proto-representation of the same unactualized possibility — in order to provide a kind of causal power for the unactualized possibility — then the result is the familiar experience of phenomenal consciousness. (shrink)

_Stream of Consciousness_ is about the phenomenology of conscious experience. Barry Dainton shows us that stream of consciousness is not a mosaic of discrete fragments of experience, but rather an interconnected flowing whole. Through a deep probing into the nature of awareness, introspection, phenomenal space and time consciousness, Dainton offers a truly original understanding of the nature of consciousness.

Consciousness has a number of puzzling features. One such feature is its unity: the experiences and other conscious states that one has at a particular time seem to occur together in a certain way. I am currently enjoying visual experiences of my computer screen, auditory experiences of bird-song, olfactory experiences of coffee, and tactile experiences of feeling the ground beneath my feet. Conjoined with these perceptual experiences are proprioceptive experiences, experiences of agency, affective and emotional experiences, and conscious (...) thoughts of various kinds. These experiences are unified in a variety of ways, but the kind of unity that I’m interested in here concerns their phenomenal character. Take just two of these experiences: the sound of bird-song and the smell of coffee. There is something it is like to have the auditory experience, there is something it is like to have the olfactory experience, and there is something it is like to have both the auditory and olfactory experiences together. These two experiences occur as parts or components or aspects of a larger, more complex experience. And what holds of these two experiences seems to hold – at least in normal contexts – of all of one’s simultaneous experiences: they seem to be subsumed by a single, maximal experience.2 We could think of this maximal experience as an experiential perspective on the world. What it is like to be me right now is (or involves) an extremely complex conscious state that subsumes the various simpler experiences that I outlined above (seeing my computer screen, hearing bird-song, smelling coffee, and so on). I will follow recent literature in using the term “co-consciousness” for the relation that a set of conscious states bear to each other when they have a complex phenomenology (Bayne and Chalmers 2003; Dainton 2000; Hurley 1998; Lockwood 1989). (shrink)

There has been considerable optimism recently, among philosophers and neuroscientists, concerning the prospect for major discoveries about the neurophysiological basis of mind. The support for this optimism has been extremely abstract and general. I wish to present some grounds ..

What is it to be capable of thoughts about an objective world? What is involved in the unity of consciousness? How is the ability to attribute attitudes to other persons to be understood? The three symposia in this volume develop new approaches to these central questions in the philosophy of mind. The contributors include leading philosophers of the middle and younger generation working in Britain. All the issues discussed have an interdisciplinary dimension, and each symposium contains a contribution (...) from a noted psychologist working in the same field. The volume will be of interest not only to philosophers of mind, but also to those concerned with metaphysics, epistemology, developmental pscychology, animal psychology, and the nature of consciousness. (shrink)