Tim Bayne

Neural organoids are laboratory-generated entities that replicate certain structural and functional features of the human brain. Most neural organoids are disembodied—completely decoupled from sensory input and motor output. As such, questions about their potential capacity for consciousness are exceptionally difficult to answer. While not disputing the need for caution regarding certain neural organoid types, this paper appeals to two broad constraints on any adequate theory of consciousness—the first involving the dependence of consciousness on embodiment; the second involving the dependence of consciousness on representations—to argue that disembodied neural organoids are not plausible candidates for consciousness.

Beat perception has received very little attention from either philosophers of mind or philosophers of music. This neglect is unfortunate, for the topic is rich with philosophical interest. This article addresses two questions. The first concerns the nature of our experience of musical beat. Here, we argue that experiences of beat are forms of auditory perception. The second question concerns the nature of musical beat itself: what are beats? We defend a form of anthropocentric realism about beats: beats are mind‐independent properties of sound sequences whose nature can be understood only in relation to our perceptual capacities.

One of the many fault-lines within accounts of consciousness concerns the unity of consciousness. Some theorists claim that consciousness is unified—indeed, some theorists insist that consciousness is essentially unified. Other theorists assert that the unity of consciousness is an illusion, and that consciousness is often, if not invariably, disunified. Unfortunately, it is rare for proponents of either side of the debate to explain what the unity of consciousness might involve. What would it mean for consciousness to be unified? In this chapter I provide a brief cartography of the unity of consciousness. In the next section I introduce a number of unity relations that can hold between conscious states, and in the following sections I show how these unity relations can be used to construct various conceptions of the unity of consciousness—what I call unity theses. These unity theses provide us with a set of reference points by means of which we can orient discussions of the unity of consciousness.

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”.

This collection of essays focuses on the interface between delusions and self-deception. As pathologies of belief, delusions and self-deception raise many of the same challenges for those seeking to understand them. Are delusions and self-deception entirely distinct phenomena, or might some forms of self-deception also qualify as delusional? To what extent might models of self-deception and delusion share common factors? In what ways do affect and motivation enter into normal belief-formation, and how might they be implicated in self-deception and delusion? The essays in this volume tackle these questions from both empirical and conceptual perspectives. Some contributors focus on the general question of how to locate self-deception and delusion within our taxonomy of psychological states. Some contributors ask whether particular delusions - such as the Capgras delusion or anosognosia for hemiplegia - might be explained by appeal to motivational and affective factors. And some contributors provide general models of motivated reasoning, against which theories of pathological belief-formation might be measured.

Is consciousness multisensory? Obviously it is multisensory in certain ways. Human beings typically possess the capacity to have experiences in at least the five familiar sensory modalities, and quite possibly in a number of other less commonly recognised modalities as well. But there are other respects in which it is far from obvious that consciousness is multisensory. This chapter is concerned with one such respect. Οur concern here is with whether consciousness contains experiences associated with distinct modalities at the same time. We will describe those who endorse a positive answer to this question as endorsing a multisensory view (MSV) of the structure of consciousness, and those who endorse a negative answer to this question as having a unisensory view (USV) of the structure of consciousness.

This is a review of Barry Dainton's ‘Stream of Consciousness’. While much that is written about the unity of consciousness does, as Dainton says, traffic in vague metaphors and exaggerated claims, Dainton's book is a superb example of sober thinking and meticulous attention to detail. Stream of Consciousness can be roughly divided into three projects, projects that are bound together by co-consciousness. In the present context ‘co-consciousness’ refers to the relation that experiences have when they are experienced together. For instance, when one experiences a pain in one's foot while listening to music, these two experiences will typically be co-conscious parts of a single multi-modal experience, feeling-a-pain-in-one's-foot-while-listening-to-music.