If Australasian philosophers constitute the kind of group to which a collective identity or broadly shared self-image can plausibly be ascribed, the celebrated history of Australian materialism rightly lies close to its heart. Jack Smart’s chapter in this volume, along with an outstanding series of briefer essays in A Companion to Philosophy in Australia and New Zealand (Forrest 2010; Gold 2010; Koksvik 2010; Lycan 2010; Matthews 2010; Nagasawa 2010; Opie 2010; Stoljar 2010a), effectively describe the naturalistic realism of Australian philosophy (...) of mind. In occasional semi-serious psychogeographic speculation, this long-standing and strongly-felt intellectual attitude has been traced back to the influences of our light, land, or lifestyle (Devitt 1996, x; compare comments by Chalmers and O’Brien in Mitchell, 2006). Australasian work in philosophy of mind and cognition has become more diverse in the last 40 years, but is almost all still marked, in one way or another, by the history of these debates on materialism. (shrink)

This thesis explores the possibility of composite consciousness: phenomenally conscious states belonging to a composite being in virtue of the consciousness of, and relations among, its parts. We have no trouble accepting that a composite being has physical properties entirely in virtue of the physical properties of, and relations among, its parts. But a long­standing intuition holds that consciousness is different: my consciousness cannot be understood as a complex of interacting component consciousnesses belonging to parts of me. I ask why: (...) what is it about consciousness that makes us think it so different from matter? And should we accept this apparent difference? (shrink)

A computational theory of consciousness should include a quantitative measure of consciousness, or MoC, that (i) would reveal to what extent a given system is conscious, (ii) would make it possible to compare not only different systems, but also the same system at different times, and (iii) would be graded, because so is consciousness. However, unless its design is properly constrained, such an MoC gives rise to what we call the boundary problem: an MoC that labels a system as conscious (...) will do so for some – perhaps most – of its subsystems, as well as for irrelevantly extended systems (e.g., the original system augmented with physical appendages that contribute nothing to the properties supposedly supporting consciousness), and for aggregates of individually conscious systems (e.g., groups of people). This problem suggests that the properties that are being measured are epiphenomenal to consciousness, or else it implies a bizarre proliferation of minds. We propose that a solution to the boundary problem can be found by identifying properties that are intrinsic or systemic: properties that clearly differentiate between systems whose existence is a matter of fact, as opposed to those whose existence is a matter of interpretation (in the eye of the beholder). We argue that if a putative MoC can be shown to be systemic, this ipso facto resolves any associated boundary issues. As test cases, we analyze two recent theories of consciousness in light of our definitions: the Integrated Information Theory and the Geometric Theory of consciousness. (shrink)

A central issue in philosophy and neuroscience is the problem of unified visual consciousness. This problem has arisen because we now know that an object's stimulus features (e.g., its color, texture, shape, etc.) generate activity in separate areas of the visual cortex (Felleman & Van Essen, 1991). For example, recent evidence indicates that there are very few, if any, neural connections between specific visual areas, such as those that correlate with color and motion (Bartels & Zeki, 2006; Zeki, 2003). So (...) how do unified objects arise in visual consciousness? Some neuroscientists propose that neural synchrony is the mechanism that binds an object's features into a unity (e.g., see Crick, 1994; Crick & Koch, 1990; Engel, 2003; Roelfsema, 1998; Singer, 1996; von der Malsburg, 1996, 1999). I argue, on both empirical and philosophical grounds, that neural synchrony fails to explain the unity of visual consciousness. (shrink)

Philosophers and cognitive scientists of perception by custom have investigated individual sense modalities in relative isolation from each other. However, perceiving is, in a number of respects, multimodal. The traditional sense modalities should not be treated as explanatorily independent. Attention to the multimodal aspects of perception challenges common assumptions about the content and phenomenology of perception, and about the individuation and psychological nature of sense modalities. Multimodal perception thus presents a valuable opportunity for a case study in mature interdisciplinary cognitive (...) science. This chapter aims to raise these issues against the background of unimodal approaches in the study of perception. It presents some of the central empirical findings concerning multimodality, and it explains the philosophical implications of these findings. Foremost, it aims to encourage and open avenues for future research. (shrink)

The objectives of this article are twofold. First, by denying the dualism inherent in attempts to load metaphysical significance on the inner/outer distinction, it defends the view that scientific investigation can approach consciousness in itself, and is not somehow restricted in scope to the outward manifestations of a private and hidden realm. Second, it provisionally endorses the central tenets of global workspace theory, and recommends them as a possible basis for the sort of scientific understanding of consciousness thus legitimised. However, (...) the article goes on to argue that global workspace theory alone does not constitute a fully worked-out objective account of the conscious subject. This requires additional attention to be paid to the issue of embodiment, and to the possibility of indexicality that arises when an instantiation of the global workspace architecture inhabits a spatially localised body. (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)

Current views of consciousness can be divided by whether the theorist accepts or rejects cognitivism about consciousness. Cognitivism as we understand it is the view that consciousness is just a form of representation or an information-processing property of a system that has representations or perhaps both.<b> </b>Anti-cognitivists deny this, appealing to thought experiments about inverted spectra, zombies and the like to argue that consciousness could change while nothing cognitive or representational changes. Nearly everyone agrees, however, that consciousness has a _representational (...) base._ Whether consciousness _simply is_ representational or cognitive, it at least _requires _representation (and cognition). In an ecumenical spirit, we will focus on this point of agreement and sketch a theory of what this representational base might be. We hope that the result will be a framework useful for investigating consciousness empirically. (shrink)

The central undertaking of this project is to initiate a phenomenological theory of musical experience. The core views expressed are that musical rhythm is the most fundamental, and the only essential, component of the musical experience, and that the essence of musical experience lies in attending to rhythm as communicative of a sense of time. In the introduction I set out the general phenomenon of musical understanding and argue for the relevance of phenomenological description of basic musical experience for the (...) theory of musical understanding. I continue this work by considering Jerrold Levinson's concatenationist view, and indicate the need for a more adequate characterization of basic musical experience. I then discuss Roger Scruton's attempt to distinguish musical from nonmusical hearing in terms of metaphorical perception and acousmatic listening and conclude that neither provides an essential characteristic of musical hearing. I present the theory and method of phenomenology and trace out what I take to be phenomenologically adequate theories of sound and auditory experience. The heart of the work explores the notion of musical time along with the nature of the experience of rhythm and meter. The first part of the final chapter contains an historical and critical overview of philosophical accounts of the connection between music and the emotions, and the related issue of whether music possesses any "content" beyond sounds and their melodic, rhythmic, and harmonic organization. The second part considers attempts to pursue a theoretical analogy between music and language. (shrink)

The question of the unity of consciousness is often treated as the question of how different conscious experiences are related to each other in order to be unified. Many contemporary views on the unity of consciousness are based on this bottom-up approach. In this paper I explore an alternative, top-down approach, according to which (to a first approximation) a subject undergoes one single conscious experience at a time. From this perspective, the problem of unity of consciousness becomes rather the problem (...) of how we can distinguish a multiplicity of goings-on within our conscious experience at any time, given that it is unique. I will present three possible top-down approaches to unity of consciousness, which I call Priority unity monism, Existence unity monism, and Brentanian unity monism. Priority monism and Existence monism are defined in analogy with the homonymous metaphysical theories of object constitution. Brentanian monism retraces Franz Brentano’s view on unity of consciousness, and is defined by appeal to some of his mereological ideas. I will argue that the latter is the best top-down approach to unity of consciousness. (shrink)

I analyse the meaning of a popular idiom among consciousness researchers, in which an individual's consciousness is described as a 'field'. I consider some of the contexts where this idea appears, in particular discussions of attention and the unity of consciousness. In neither case, I argue, do authors provide the resources to cash out all the implications of field-talk: in particular, they do not give sense to the idea of conscious elements being arrayed along multiple dimensions. I suggest ways to (...) extend and generalize the attentional construal of 'field-talk' to provide a genuine multiplicity of dimensions, through the notions of attentional proximity and causal proximity: the degree to which two experiential elements are disposed to bring one another into attention when attended, or to interact in other distinctively mental ways. I conclude that if consciousness is a field, it is one organized by attentional and/or causal proximity. (shrink)

Although the study of epileptic absence seizures has the potential to contribute a great deal to the scientific understanding of consciousness, this potential has yet to be fully exploited. There have been a number of insightful discussions of consciousness in the context of epileptic seizures, but the basic conceptual issues are still poorly understood and many empirical questions remain unexplored. In this paper I review a number of questions that are of interest to consciousness scientists and identify ways in which (...) the study of absence seizures might bear on their investigation. (shrink)