According to the Phenomenal Unity Thesis (“PUT”) – most prominently defended by Tim Bayne and David Chalmers – necessarily, any set of phenomenal states of a subject at a time is phenomenally unified. The standard formulation of this thesis is unacceptably vague because it does not specify what it is to be a subject. In this paper, I first consider possible meanings for ‘subject’ as used in PUT and argue that every plausible candidate definition renders (...) the thesis trivially true. I consider and reject Tim Bayne’s proposal that ‘subject’ means ‘human being’. Then I argue, contra Bayne and Chalmers, that PUT is not incompatible with any major theory of consciousness, and contra Michael Tye, that split-brain patients do not provide evidence against PUT. I close by considering some nontrivial alternatives to PUT. (shrink)

One's contemporaneous conscious mental states seem bound in a single, unified experience. Dainton argues, against what he calls the S-Thesis, that we cannot explain such co-consciousness in terms of states' being located in a single phenomenal space, a functional space posited to explain our ability to locate ourselves relative to perceived stimuli. But Dainton's argument rests on a conflation of egocentric and allocentric self-localizing, and thus fails to undermine the S-Thesis. Nevertheless, experiments on visual neglect suggest one (...) can have unconscious mental states that are located in the same phenomenal field, so the S-Thesis fails after all. I examine a modified version of the S-Thesis according to which mental states are co-conscious when one is aware of them via a higher-order sensation that represents them as located in the same phenomenal field. But among other problems, this view fails to explain the co-consciousness of intentional states, which aren't located in phenomenal fields. Finally, I argue that a higher-order-thought model of consciousness best explains the apparent unity of experience in terms of one's tacit assumption that all the first-person thoughts in virtue of which one is conscious of one's mental states refer to the same individual. (shrink)

Some argue that split-brain cases undermine the thesis that phenomenal consciousness is necessarily unified. This paper defends the phenomenal unity thesis against Michael Tye's (2003 ) version of that argument. Two problems are identified. First, his argument relies on a questionable analysis of the split-brain data. Second, his analysis leads to the view that in experimental situations split-brain patients are not single subjects – a result that would render the analysis harmless to the phenomenal (...) unity thesis. (shrink)

Ground Representationism is the position that for each phenomenal feature there is a representational feature that accounts for it. Against this thesis, Ned Block (The Puzzle of Phenomenal Precision, 2015) has provided an intricate argument that rests on the notion of “phenomenal precision”: the phenomenal precision of a percept may change at a different rate from its representational counterpart. If so, there is then no representational feature that accounts for a specific change of this (...) class='Hi'>phenomenal feature. Therefore, Ground Representationism cannot be generally true. -/- Although the notion of phenomenal precision is intuitive, it is admittedly in need of clarification. Here I reconstruct Block’s argument by suggesting a way of estimating phenomenal precision that is based on the assumption that parts of perceptual wholes can share phenomenal features independently of their place in the whole. Understood like this, the overall argument shows what it is supposed to show. -/- A more thorough look at the notion of phenomenal precision suggests tension with Block’s other work: in order to be non-trivial, we have to accept that some of our phenomenality is not concrete, but only generic. Such “solely generic phenomenology”, however, is a position mainly held by opponents to Block’s Access- vs. Phenomenal Consciousness-distinction. Interpreting phenomenal imprecision as constituted by introspective imprecision does not suffice as a way out. It seems that phenomenal precision is either trivial, self-contradictory, or incompatible with Block’s position elsewhere. So some additional elucidation on this crucial notion is needed. (shrink)

Meehan finds fault with a number of my arguments, and proposes that better solutions to the problems I was addressing are available if we adopt a higher-order theory of consciousness. I start with some general remarks on theories of this sort. I connect what I had to say about the A-thesis with different forms of higher-order sense theories, and explain why I ignored higher-order thought theories altogether: there are compelling grounds for thinking they cannot provide a viable account of (...) phenomenal unity in phenomenal terms. Meehan. (shrink)

In this paper, I explore one particular dimension of Brentano’s legacy, namely, his theory of mental analysis. This theory has received much less attention in recent literature than the intentionality thesis or the theory of inner perception. However, I argue that it provides us with substantive resources in order to conceptualize the unity of intentionality and phenomenality. My proposal is to think of the connection between intentionality and phenomenality as a certain combination of part/whole relations rather than as (...) a supervenience or identity relation. To begin, I discuss some reasons for being a (neo-)Brentanian about the mind and briefly introduce the main characteristics of Brentano’s internalist description program. Then, I turn to the current “inseparatist” way of dealing with intentionality and phenomenality, focusing on the demand for unity coming from advocates of phenomenal intentionality. I suggest that the unity of the mind may be put in a new light if we put aside metaphysical–epistemological questions, go back to Brentano’s description program, and endorse his thesis that the mental is something unified in which various parts must be distinguished. In the last section, I draw some lessons from this approach, holding that, for any representational content R, R is (in Brentano’s terms) an abstractive or “distinctional” part of the relevant state and that, for any qualitative aspect Q, Q is an abstractive or “distinctional” part of the relevant representational content R. (shrink)

Some authors argue that phenomenal unity can be grounded in the attentional structure of consciousness, which endows conscious states with at least a foreground and a background. Accordingly, the phenomenal character of part of a conscious state comprises a content aspect and a structural aspect. This view presents the concern that such a structure does not bring about phenomenal unity, but phenomenal segregation, since the background is separated from the foreground. I argue that attention (...) can still lead to a form of phenomenal unity that connects the foreground with the background. Experiencing oneself as controlling the focus of attention can, at least occasionally, bring about an experienced connection between the attentional foreground and the attentional background of a conscious experience. (shrink)

opinionated review of some of the recent work on the phenomenal unity of consciousness.

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)

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)

Our perceptual experiences stretch across time to present us with movement, persistence and change. How is this possible given that perceptual experiences take place in the present that has no duration? In this paper I argue that this problem is one and the same as the problem of accounting for how our experiences occurring at different times can be phenomenally unified over time so that events occurring at different times can be experienced together. Any adequate account of temporal experience must (...) also account for phenomenal unity. I look to Edmund Husserl's writings on time consciousness for such an account. (shrink)

There is something it is like for me to hear a seagull crying, something it is like to see a boat in the distance, and something it is like to suffer a slight headache. Each of these local conscious experiences have their own phenomenal character. The experiences are phenomenally unified just in case there is also something it is like to enjoy these and all the other local experiences I have at the relevant time together. For there is also (...) something it is like to be me overall: my global conscious experience has a phenomenal character. But what is it like to be me overall? What is the relationship between the phenomenal characters of local experiences and the phenomenal character of the global experience to which they contribute? This paper argues that our concepts of local and global conscious experiences allow for three completely different conceptions of how the former combine into the latter. It also argues that this shows that our concepts of local conscious experiences, global conscious experiences, and of their relationship are much more permissive than we might have thought. (shrink)

The problem of phenomenal unity consists in providing a phenomenological characterization of the difference between phenomenally unified and disunified conscious experiences. Potential solutions to PPU are faced with an important challenge. I show that this challenge can be conceived as a phenomenological dual to what is known as Bradley’s regress. This perspective facilitates progress on PPU by finding duals to possible solutions to Bradley’s regress and makes it intelligible why many characterize phenomenal unity in terms of (...) the existence of a single global conscious state. I call this latter view the “single state conception”. SSC is superficially attractive, because it seems to provide a solution to the phenomenological dual to Bradley’s regress, but should still be rejected, because it does not solve PPU; instead, it creates more problems; these problems can be avoided by alternative conceptions of phenomenal unity. (shrink)

It may be true that we are epistemically in the dark about various things. Does this fact ground the truth of fallibilism? No. Still, even the most zealous skeptic will probably grant that it is not clear that one can be incognizant of their own occurrent phenomenal conscious mental goings-on. Even so, this does not entail infallibilism. Philosophers who argue that occurrent conscious experiences play an important epistemic role in the justification of introspective knowledge assume that there are occurrent (...) beliefs. But this assumption is false. This paper argues that there are no occurrent beliefs. And it considers the epistemic consequences this result has for views that attempt to show that at least some phenomenal beliefs are infallible. (shrink)

Smithies defends the phenomenal sufficiency thesis, according to which every perceptual experience provides immediate, defeasible justification to believe some content in virtue of its phenomenal character alone. This commentary challenges this thesis by presenting two kinds of knowledge, the possession of which seems necessary for perceptual justification.

dewey is an optimistic thinker. He fits into a vein of pragmatism known as meliorism, which holds that the condition of the world can be improved through intelligent, imaginative, human action. For this reason, it is tempting to read Dewey as permanently cheerful—particularly when we compare him with philosophers from the continental tradition who work on similar themes. However, it is important to remember that meliorism holds that improvement is possible through intelligent engagement—not that it is guaranteed. Dewey's aesthetics particularly (...) have been mischaracterized as overly sanguine, lacking solid account of the tragic. This is a misreading since Dewey's aesthetic does make ample room for human suffering on... (shrink)

In the philosophy of mind, revelation is the claim that the nature of qualia is revealed in phenomenal experience. In the literature, revelation is often thought of as intuitive but in tension with physicalism. While mentions of revelation are frequent, there is room for further discussion of how precisely to formulate the thesis of revelation and what it exactly amounts to. Drawing on the work of David Lewis, this paper provides a detailed discussion on how the thesis (...) of revelation, as well as its incompatibility with physicalism, is to be understood. (shrink)

commentary on Dainton, B. (2000). Stream of Consciousness: Unity and Continuity in Conscious Experience. London: Routledge. ABSTRACT: Stream of Consciousness is a detailed and insightful analysis of the nature of phenomenal consciousness, especially its unity at a time and continuity over stretches of time. I find Dainton's approach to phenomenal consciousness in many ways sound but I also point out one major source of disgreement between us. Dainton believes that to explain phenomenal unity and (...) continuity, no reference to anything outside experience is required. Thus, he postulates a fundamental experiential relation called co-consciousness which is supposed to do all the explanatory work. On the contrary, I hold that to truly explain features of consciousness such as phenomenal unity and continuity, reference to mechanisms outside the phenomenal realm are necessary. (shrink)

In this chapter, I argue for the thesis that phenomenal consciousness is the basis of epistemic justification. More precisely, I argue for the thesis of phenomenal mentalism, according to which epistemic facts about which doxastic attitudes one has justification to hold are determined by non-epistemic facts about one’s phenomenally individuated mental states. I begin by providing intuitive motivations for phenomenal mentalism and then proceed to sketch a more theoretical line of argument according to which (...) class='Hi'>phenomenal mentalism provides the best explanation of the independently motivated thesis of access internalism. The result is a theory of epistemic justification that brings intuition and theory into reflective equilibrium. (shrink)

Perception is our key to the world. It plays at least three different roles in our lives. It justifies beliefs and provides us with knowledge of our environment. It brings about conscious mental states. It converts informational input, such as light and sound waves, into representations of invariant features in our environment. Corresponding to these three roles, there are at least three fundamental questions that have motivated the study of perception. How does perception justify beliefs and yield knowledge of our (...) environment? How does perception bring about conscious mental states? How does a perceptual system accomplish the feat of converting varying informational input into mental representations of invariant features in our environment? -/- This book presents a unified account of the phenomenological and epistemological role of perception that is informed by empirical research. So it develops an account of perception that provides an answer to the first two questions, while being sensitive to scientific accounts that address the third question. The key idea is that perception is constituted by employing perceptual capacities - for example the capacity to discriminate instances of red from instances of blue. Perceptual content, consciousness, and evidence are each analyzed in terms of this basic property of perception. Employing perceptual capacities constitutes phenomenal character as well as perceptual content. The primacy of employing perceptual capacities in perception over their derivative employment in hallucination and illusion grounds the epistemic force of perceptual experience. In this way, the book provides a unified account of perceptual content, consciousness, and evidence. (shrink)

This dissertation investigates the nature, the phenomenal character and the philosophical significance of attention. According to its central thesis, attention is the ongoing mental activity of structuring the stream of consciousness or phenomenal field. The dissertation connects the scientific study of attention in psychology and the neurosciences with central discussions in the philosophy of mind. Once we get clear on the nature and the phenomenal character of attention, we can make progress toward understanding foundational issues concerning (...) the nature and the structure of conscious mentality itself. We understand better how consciousness is connected to self-awareness and to agency, and we get a better grip on the nature of perceptual experience, the unity of consciousness, and its subjective character. The dissertation also aims at showing that the current empirical investigation of attention should be complemented with work at the level of generality that a philosophical analysis can provide; it shows how such an analysis is relevant for the scientific study of attention by providing a new conceptual framework and suggesting several new areas of research. (shrink)

The idea that moral virtues form some sort of “unity” has received considerable attention from virtue theorists. In this paper, I argue that the possibility of unity among intellectual virtues has been wrongly overlooked. My approach has two main components. First, I work to distinguish the variety of different views that are available under the description of a unity thesis. I suggest that these views can be categorised depending on whether they are versions of standard (...) class='Hi'>unity or of strong unity. Standard unity claims that the possession of one virtue implies possession of all the others. Strong unity claims that the virtues are, in some sense, all the same thing. By exploring what these different versions of unity would look like when applied to intellectual virtues, I aim to provide a menu of options for future work in virtue epistemology. I then develop and defend one of these options in more detail, arguing that the initially less plausible strong unity has merit when applied to the intellectual sphere. In these two ways, I aim to show that the possibility of unity among the intellectual virtues is deserving of serious consideration. (shrink)

Co-Directors: Alexander Pruss & Tim O’Connor Committee: C. Stephen Evan’s, Todd Buras, -/- The current state of consciousness research is at an impasse. Neuroscience faces a variety of recalcitrant problems regarding the neurobiological binding together of states of consciousness. Philosophy faces the combination problem, that of holistically unifying phenomenal consciousness. In response, I argue that these problems all result from a naturalistic assumption that subjects of consciousness are built up out of distinct physical parts. I begin by developing a (...) Husserlian mereology of part-whole relations, which I apply to both an ontology of the holistic unity of the subjects of consciousness and the holistic unity of phenomenal consciousness itself. After a detailed analysis of the ontology and neuroscience of phenomenally unified consciousness, I argue against the three major naturalist views: physicalism, Russellian panpsychism, and emergentism. I develop various arguments demonstrating that these views each fail to account for the possibility of subjects of phenomenally unified consciousness. In the final chapter, I show how these arguments entail that the subject of phenomenal unity must be partless, must be a simple holistic unity. In turn, this provides a defense of substance dualism or at least something near enough. Given the widespread rejection of mind-body dualism, I answer certain neurological objections and conclude by sketching the details of an underexplored neo-Aristotelian form of substance dualism. I conclude that each of us, indeed every subject of phenomenally unified consciousness, is not made up of distinct parts. Not a brain. Not a body. Every embodied subject of phenomenally unified consciousness is a bodily soul. (shrink)

Barry Dainton presents a fascinating new account of the self, the key to which is experiential or phenomenal continuity. Provided our mental life continues we can easily imagine ourselves surviving the most dramatic physical alterations, or even moving from one body to another. It was this fact that led John Locke to conclude that a credible account of our persistence conditions - an account which reflects how we actually conceive of ourselves - should be framed in terms of mental (...) rather than material continuity. But mental continuity comes in different forms. Most of Locke's contemporary followers agree that our continued existence is secured by psychological continuity, which they take to be made up of memories, beliefs, intentions, personality traits, and the like. Dainton argues that that a better and more believable account can be framed in terms of the sort of continuity we find in our streams of consciousness from moment to moment. Why? Simply because provided this continuity is not lost - provided our streams of consciousness flow on - we can easily imagine ourselves surviving the most dramatic psychological alterations. Phenomenal continuity seems to provide a more reliable guide to our persistence than any form of continuity. The Phenomenal Self is a full-scale defence and elaboration of this premise. The first task is arriving at an adequate understanding of phenomenal unity and continuity. This achieved, Dainton turns to the most pressing problem facing any experience-based approach: losses of consciousness. How can we survive them? He shows how the problem can be solved in a satisfactory manner by construing ourselves as systems of experiential capacities. He then moves on to explore a range of further issues. How simple can a self be? How are we related to our bodies? Is our persistence an all-or-nothing affair? Do our minds consist of parts which could enjoy an independent existence? Is it metaphysically intelligible to construe ourselves as systems of capacities? The book concludes with a novel treatment of fission and fusion. (shrink)

Although Nietzsche accepted a distant cousin of Brian Leiter’s “Doctrine of Types,” according to which, “Each person has a fixed psycho-physical constitution, which defines him as a particular type of person,” the details of his actual view are quite different from the flat-footed position Leiter attributes to him. Leiter argues that Nietzsche thought that type-facts partially explain the beliefs and actions, including moral beliefs and actions, of the person whom those type-facts characterize. With this much, I agree. However, the Doctrine (...) of Types as formulated by Leiter, is manifestly unsupported both by Nietzsche’s texts and as an empirical hypothesis. Although Leiter has teamed up with Joshua Knobe to shore up the empirical credentials of his version of the Doctrine of Types, and although Knobe is one of the best experimental philosophers currently working in moral psychology, their account of the Doctrine is wrong both textually and empirically. That is to say, Nietzsche did not hold the version of the Doctrine they attribute to him, and it’s a good thing he didn’t, because the version that he actually did hold is better empirically supported than the version that they attribute to him. For Nietzsche – and in reality – types are not immutable or fixed. Although not everyone is endowed with the same type, which type someone belongs to can (though needn’t) evolve over the course of her lifetime. In particular, whereas I agree with Leiter that the neo-Aristotelian account of character development is empirically inadequate, I do so not because I think no character development occurs but because I think that character development occurs in a different way. In addition, for Nietzsche – and in reality – types on their own are not normative. Character, which is normatively evaluable, only arises through the refinement, calibration, and development of temperament. It might seem like I’ve just set myself an ambitious-enough goal, but I want to do more in this paper. The main point I want to argue is that Nietzsche held a person-type-relative unity of virtue thesis, according to which what’s intrinsically good for a particular person is to develop and act from particular character traits that “fit” her type. (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 proponents of ‘phenomenal holism’, the intrinsic characteristics of the parts of unified conscious states are dependent to some degree on the characteristics of the wholes to which they belong. Although the doctrine can easily seem obscure or implausible, there are eminent philosophers who have defended it, amongst them Timothy Sprigge. In Stream of Consciousness (2000) I found Sprigge’s case for phenomenal holism problematic on several counts; in this paper I re-assess some of these criticisms. Recent experimental (...) work suggests cross-modal perceptual interference may be far more prevalent than expected. I argue that although these results do lend support to phenomenal holism in one of its guises, they do not support the strong form of holism espoused by Sprigge. I then move on to consider the relevance and impact of certain gestalt-related considerations, and argue that these considerations at best establish that the stronger form of holism applies to some parts of some experiential states, but not to all parts of all states, as Sprigge claims. I then consider a more promising way forward for anyone who wishes to defend an across-the-board holism of the strong variety, arguing that what is required is a form of phenomenal interdependence that is rooted solely in phenomenal unity. I conclude by outlining a case for thinking that an interdependence of this sort is a quite general feature of unified conscious states. (shrink)

The phenomenal overflow thesis states that the content of phenomenally conscious mental states can exceed our capacities of cognitive access. Much of the philosophical and scientific debate about the phenomenal overflow thesis has been focused on vision, attention, and verbal report. My view is that we feel things in our bodies that we don’t always process with the resources of cognitive access. Thinking about the question of phenomenal overflow from the perspective of embodied affect rather (...) than the content of visual experience is the novel contribution of this paper. I argue that we have reason to think that hydranencephalic children are phenomenally conscious but incapable of cognitive access. Further, I claim that we should interpret the reactive behavior of these subjects in terms of a kind of access to content that is distinct from cognitive access, I call this novel form of access ‘affective access.’. (shrink)

This paper presents forms of multimodal perceptual experience that undermine the claim that each aspect of perceptual experience is modality specific. In particular, it argues against the thesis that all phenomenal character is modality specific (even making an allowance for co-conscious unity). It concludes that a multimodal perceptual episode may have phenomenal features beyond those that are associated with the specific modalities.

The thesis that there is a troublesome explanatory gap between the phenomenal aspects of experiences and the underlying physical and functional states is given a number of different interpretations. It is shown that, on each of these interpretations, the thesis is false. In supposing otherwise, philosophers have fallen prey to a cognitive illusion, induced largely by a failure to recognize the special character of phenomenal concepts.

: Although Externalism is widely accepted as a thesis about belief, as a thesis about experience it is both controversial and unpopular. One potential explanation of this difference involves the phenomenality of perceptual experience—perhaps there is something about how perceptual experiences seem that straightforwardly speaks against Externalist accounts of their individuation conditions. In this paper, I investigate this idea by exploring the role that the phenomenality of color experience plays in a prominent argument against Phenomenal Externalism: Ned (...) Block’s Inverted Earth Argument. In the course of carrying out this investigation, I will show that challenging Phenomenal Externalism on phenomenological grounds is not as straightforward a task as it is commonly assumed to be. -/- . (shrink)

The objective of this paper is to defend the non-reductive thesis of phenomenal consciousness. This paper will give an overview of the arguments for the non-reductive explanation of phenomenal consciousness and justify why the reductionist approach is implausible in the context of explaining phenomenal subjective experience. The debate between reductionist and non-reductionist on the project of demystifying and mystifying phenomenal consciousness is driven by two fundamental assumptions-1) Reductive-Naturalistic Objectivism, 2) Phenomenal Realism. There are several (...) arguments for the irreducibility of phenomenal consciousness; this paper will focus on the inverted spectrum argument, knowledge argument, and the conceivability argument. (shrink)

Classical Indian debates about ātman—self—concern a minimal or core entity rather than richer notions of personal identity. These debates recognise that there is phenomenal unity across time; but is a core self required to explain it? Contemporary phenomenologists foreground the importance of a phenomenally unitary self, and Udayana's position is interpreted in this context as a classical Indian approach to this issue. Udayana seems to dismiss the body as the candidate for phenomenal identity in a way similar (...) to some Western philosophers. He also provides some inkling of how alternative ways of defending phenomenal unity without self fail. A criticism of some Western phenomenological theories of self is that they do not explain how unity is provided by the ‘mineness’ of cognition. Udayana's suggestion that a sort of agency provides such an explanation can be developed as an original argument for a phenomenally unitary self. (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)

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 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)

: Phenomenal knowledge usually comes from experience. But it need not. For example, one could know what it’s like to see red without seeing red—indeed, without having any color experiences. Daniel Dennett (2007) and Pete Mandik (forthcoming) argue that this and related considerations undermine the knowledge argument against physicalism. If they are right, then this is not only a problem for anti‐physicalists. Their argument threatens to undermine any version of phenomenal realism— the view that there are phenomenal (...) properties, or qualia, that are not conceptually reducible to physical or functional properties. I will argue that this threat is illusory. Explaining why will clarify what is and is not at issue in discussions of the knowledge argument and phenomenal realism. This will strengthen the case for physically and functionally irreducible qualia. 2 Phenomenal knowledge usually comes from experience. For example, I know what it’s like to see red because I have done so. Does knowing what it’s like to have an experience with phenomenal character X require having an experience with X? No. A famous counterexample is Hume’s missing shade of blue, in which one can extrapolate from phenomenally similar experiences (A Treatise of Human Nature, Bk. I, Pt. I, Sec. I).1 One might think that a weaker version of the no‐phenomenal‐knowledge‐without‐experience thesis remains tenable, e.g., that knowing what it’s like to see in color requires having or having had color experiences. But this thesis also seems doubtful. Peter Unger (1966) devised plausible counterexamples over four decades ago, and since then others (e.g., Lewis 1988, Alter 1998, Stoljar 2005) have done the same. One could have phenomenal knowledge of color experiences without having such experiences. Indeed, one could have such knowledge without having experiences that are remotely like color experiences. What is the significance of this observation for contemporary debates about consciousness and physicalism? Daniel Dennett (2007) and Pete Mandik (forthcoming) suggest that it undermines the knowledge argument against physicalism.2 That is because they take the claim that someone who has never seen in color could not know what it’s like to see in color to be the basis of the knowledge argument’s main epistemic premise: the premise that (roughly put) 3 no amount of physical knowledge is sufficient for phenomenal knowledge of color experiences. If they are right, then this is not only a problem for anti‐ physicalists. Many physicalists (e.g., Loar 1990/97, Papineau 2002, 2007) accept the knowledge argument’s epistemic premise. Dennett’s and Mandik’s arguments threaten all versions of what David Chalmers (2003) calls phenomenal realism, the view that there are phenomenal properties, or qualia, that are not conceptually reducible to physical or functional properties.3 I will argue that this threat is illusory. Explaining why will clarify what is and is not at issue in discussions of the knowledge argument and phenomenal realism. The net result will be to strengthen the case for physically inexplicable qualia. (shrink)

I argue that the most common interpretation of experiential transparency’s significance is laden with substantive and ultimately extraneous metaphysical commitments. I divest this inflated interpretation of its unwarranted encumbrances and consolidate the precipitate into a position I call core transparency. Core Transparency is a thesis about experience’s presentational character. The objects of perceptual experience are there, present to us, in a way that the objects of most beliefs and judgments are not. According to core transparency, it is in the (...) disclosure of that which is central to experience’s presentational character, an intrinsic and irreducibly phenomenal aspect of experience I call phenomenal presence, that transparency’s significance principally consists. Phenomenal presence is uniquely positioned to illuminate the relationship between perceptual experience’s most important features: its intentionality and its phenomenality. The position I defend comprises two main claims. (1) The representational features of experience, understood in isolation from experiential phenomenality, neither constitute nor explain phenomenal presence. Consequently, the representational features of experience neither determine completely nor explain exhaustively experiential phenomenality. (2) Phenomenal presence is not representational, but is nevertheless the minimal realization of experiential intentionality. (shrink)

The appearance of consciousness in the world is an amazing and puzzling fact in its own right. Indeed, consciousness is one of the most mystifying features of the cosmos. The unity of consciousness is something that cries out for analysis and explanation as well. This chapter provides a way of relating the three types of unity: objectual phenomenal unity; subject phenomenal unity; and subsumptive phenomenal unity. According to Tim Bayne and David Chalmers, (...) this sort of unity is irrelevant for investigating the nature of consciousness' unity because it is trivially true by definition and tells us nothing about consciousness. Many thinkers, including Bayne himself, believe there is no self or subject that unifies consciousness. Bayne's position amounts to a bunch of mere assertions that allow him to avoid an obvious solution: substance dualism. (shrink)

My dissertation puts forward a critique of the phenomenal intentionality theory (PIT). According to standard accounts of PIT, all genuine intentionality is either identical to or partly grounded in phenomenal consciousness. I argue that it is a conceptually significant mistake to construe conscious experiences in terms of token mental states that instantiate phenomenal properties. This mistake is predicated on ignoring an important difference in the temporal character—what I call the “temporal shape”—between states and properties as opposed to (...) conscious experiences. States and properties lack a temporal shape, but conscious experience has a temporal shape. Thus, in order to adequately capture our phenomenology of temporality we need a mental ontology that adequately reflects this distinction. A second aim of this dissertation is to defend a mereological account of phenomenal intentionality, which says that phenomenality and intentionality are related by being proper parts of a first-personal, subjective, mental event. On this approach, the conditions of satisfaction for a subject’s first-personal, subjective, mental event just are the conditions of satisfaction for phenomenal intentionality. I explore the theoretical grounds for a mereological account of phenomenal intentionality and conclude that it does a better job of explaining difficult cases like the problem of unconscious thought (e.g., your belief that “grass is green”). Thus, we have prima facie support for a mereological account of phenomenal intentionality exactly where competing accounts fail. (shrink)

In the section ‘Unity and Objectivity’ of The Bounds of Sense, P. F. Strawson argues for the thesis that unity of consciousness requires experience of an objective world. My aim in this essay is to evaluate this claim. In the first and second parts of the essay, I explicate Strawson's thesis, reconstruct his argument, and identify the point at which the argument fails. Strawson's discussion nevertheless raises an important question: are there ways in which we must (...) think of our experiences if we are to self-ascribe them? In the third part of the essay, I use Kant's remarks concerning the passivity of experience to suggest one answer to this question: in self-ascribing experiences, we must be capable of thinking of them as passive to their objects. This can be used to provide an alternative route from unity to objectivity. (shrink)