4,706 research outputs found

    The power of natural selection

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    In a recent paper, Steven Horst argued that if traditional physicalist accounts of consciousness cannot explain why there are conscious phenomena in the world then teleological accounts of consciousness that appeal to the notion of natural selection cannot do so either. I agree with Horst's conclusion but his reasoning fails to address a rebuttal to his argument made by the major proponent of such theories, namely, Fred Dretske. Dretske argues that artificial selection can create new features and that, in an analogous fashion, natural selection can too. I show that Dretske's rebuttal is inadequate because crucial features of the analogy fail. Teleological accounts of consciousness that appeal to natural selection can only explain the prevalence of consciousness

    Synaesthesia, Functionalism and Phenomenology

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    Property dualism and the merits of solutions to the mind-body problem: a reply to Strawson

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    This paper is divided into two main sections. The first articulates what I believe Strawson's position to be. I contrast Strawson's usage of 'physicalism' with the mainstream use. I then explain why I think that Strawson's position is one of property dualism and substance monism. In doing this, I outline his view and Locke's view on the nature of substance. I argue that they are similar in many respects and thus it is no surprise that Strawson actually holds a view on the mind much like one plausible interpretation of Locke's position. Strawson's use of terminology cloaks this fact and he does not himself explicitly recognize it in his paper. In the second section, I outline some of Strawson's assumptions that he uses in arguing for his position. I comment on the plausibility of his position concerning the relation of the mind to the body compared with mainstream physicalism and various forms of dualism. Before embarking on the two main sections, in the remainder of this introduction, I very briefly sketch Strawson's view

    Taxonomising the senses

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    I argue that we should reject the sparse view that there are or could be only a small number of rather distinct senses. When one appreciates this then one can see that there is no need to choose between the standard criteria that have been proposed as ways of individuating the senses – representation, phenomenal character, proximal stimulus and sense organ – or any other criteria that one may deem important. Rather, one can use these criteria in conjunction to form a finegrained taxonomy of the senses. We can think of these criteria as defining a multidimensional space within which we can locate each of the senses that we are familiar with and which also defines the space of possible senses there could be

    Nonconceptual content and the nature of perceptual experience

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    Recent philosophy of mind and epistemology has seen an important and influential trend towards accounting for at least some features of experiences in content-involving terms. It is a contested point whether ascribing content to experiences can account for all the intrinsic properties of experiences, but on many theories of experiences there are close links between the ascription of content and the ways in which experiences are ascribed and typed. The issues here have both epistemological and psychological dimensions. On the one hand, a theory of experiential content has a fundamental role in explaining how knowledge of the world can be acquired through experience. On the other hand, there are important psychological questions about the phenomenology of experiences and the conditions under which content ascriptions are made. The debate about whether experiences have conceptual or nonconceptual content is highly relevant to both the epistemological and psychological issues. This is apparent in the work of Gareth Evans who is often cited as the first philosopher to propose a theory of nonconceptual content. This paper will explicate and examine Evans' theory. In particular, attention will be paid to Evans' claim that perceptually-derived information with nonconceptual content can only qualify as a perceptual experience when it serves as input to a thinking, concept-applying, and reasoning system. We will sketch out a theoretical approach to the nature of nonconceptual content that builds on Evans' insight but does not follow him in this restrictive claim

    Perfect pitch and the implicit/explicit distinction

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    This paper examines the representationalist view of experiences in the light of the phenomena of perfect and relative pitch. Two main kinds of representationalism are identified - environment-based and cognitive role-based. It is argued that to explain the relationship between the two theories a distinction should be drawn between various types of implicit and explicit content. When investigated, this distinction sheds some light on the difference between the phenomenology of perfect and relative pitch experiences and may be usefully applied to describe the nature of experiences in the other sense modalities

    DNA extraction from formalin-fixed tissue: new light from the Deep-Sea

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    DNA samples were extracted from ethanol and formalin-fixed decapod crustacean tissue using a new method based on Tetramethylsilane (TMS)-Chelex. It is shown that neither an indigestible matrix of cross-linked protein nor soluble PCR inhibitors impede PCR success when dealing with formalin-fixed material. Instead, amplification success from formalin-fixed tissue appears to depend on the presence of unmodified DNA in the extracted sample. A staining method that facilitates the targeting of samples with a high content of unmodified DNA is provided
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