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  1. added 2019-06-18
    Consciousness Science Underdetermined: A Short History of Endless Debates.Matthias Michel - forthcoming - Ergo: An Open Access Journal of Philosophy.
    Consciousness scientists have not reached consensus on two of the most central questions in their field: first, on whether consciousness overflows reportability; second, on the physical basis of consciousness. I review the scientific literature of the 19th century to provide evidence that disagreement on these questions has been a feature of the scientific study of consciousness for a long time. Based on this historical review, I hypothesize that a unifying explanation of disagreement on these questions, up to this day, is (...)
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  2. added 2018-01-17
    The Neural Correlates of Consciousness.Jorge Morales & Hakwan Lau - forthcoming - In Uriah Kriegel (ed.), The Oxford Handbook of the Philosophy of Consciousness. Oxford University Press.
    In this chapter, we discuss a selection of current views of the neural correlates of consciousness (NCC). We focus on the different predictions they make, in particular with respect to the role of prefrontal cortex (PFC) during visual experiences, which is an area of critical interest and some source of contention. Our discussion of these views focuses on the level of functional anatomy, rather than at the neuronal circuitry level. We take this approach because we currently understand more about experimental (...)
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  3. added 2017-12-28
    Manipulating the Contents of Consciousness.Alfredo Vernazzani - 2015 - Proceedings of the 37th Meeting of the Cognitive Science Society.
    I argue for a manipulationist-mechanistic framework for content-NCC research in the case of visual consciousness (Bechtel 2008; Neisser 2012). Reference to mechanisms is common in the NCC research. Furthermore, recent developments in non-invasive brain stimulation techniques (NIBS) lend support to a manipulationist standpoint. The crucial question is to understand what is changed after manipulation of a brain mechanism. In the second part of the paper I review the literature on intentionalism, and argue that intervention on the neural mechanism is likely (...)
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  4. added 2017-09-09
    Cortical Color and the Cognitive Sciences.Berit Brogaard & Dimitria Electra Gatzia - 2017 - Topics in Cognitive Science 9 (1):135-150.
    Back when researchers thought about the various forms that color vision could take, the focus was primarily on the retinal mechanisms. Since that time, research on human color vision has shifted from an interest in retinal mechanisms to cortical color processing. This has allowed color research to provide insight into questions that are not limited to early vision but extend to cognition. Direct cortical connections from higher-level areas to lower-level areas have been found throughout the brain. One of the classic (...)
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  5. added 2017-06-15
    Perceptual Consciousness, Short-Term Memory, and Overflow: Replies to Beck, Orlandi and Franklin, and Phillips.Steven Gross & Jonathan Flombaum - 2017 - The Brains Blog.
    A reply to commentators -- Jake Beck, Nico Orlandi and Aaron Franklin, and Ian Phillips -- on our paper "Does perceptual consciousness overflow cognitive access?".
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  6. added 2016-11-03
    The Received Method for Ruling Out Brain Areas From Being NCC Undermines Itself.Benjamin Kozuch - 2015 - Journal of Consciousness Studies 22 (9-10):145-69.
    Research into the neural correlates of consciousness (NCC) aims to identify not just those brain areas that are NCC, but also those that are not. In the received method for ruling out a brain area from being an NCC, this is accomplished by showing a brain area’s content to be consistently absent from subjects’ reports about what they are experiencing. This paper points out how this same absence can be used to infer that the brain area’s content is cognitively inaccessible, (...)
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  7. added 2015-10-07
    The Emperor's New Phenomenology? The Empirical Case for Conscious Experience Without First-Order Representations.Hakwan Lau & Richard Brown - 2019 - In Adam Pautz & Daniel Stoljar (eds.), Blockheads! Essays on Ned Block's Philosophy of Mind and Consciousness. MIT Press.
    We discuss cases where subjects seem to enjoy conscious experience when the relevant first-order perceptual representations are either missing or too weak to account for the experience. Though these cases are originally considered to be theoretical possibilities that may be problematical for the higher-order view of consciousness, careful considerations of actual empirical examples suggest that this strategy may backfire; these cases may cause more trouble for first-order theories instead. Specifically, these cases suggest that (I) recurrent feedback loops to V1 are (...)
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  8. added 2015-08-26
    Relative Blindsight Arises From a Criterion Confound in Metacontrast Masking: Implications for Theories of Consciousness.Ali Jannati & Vincent Di Lollo - 2012 - Consciousness and Cognition 21 (1):307-314.
    Relative blindsight is said to occur when different levels of subjective awareness are obtained at equality of objective performance. Using metacontrast masking, Lau and Passingham reported relative blindsight in normal observers at the shorter of two stimulus-onset asynchronies between target and mask. Experiment 1 replicated the critical asymmetry in subjective awareness at equality of objective performance. We argue that this asymmetry cannot be regarded as evidence for relative blindsight because the observers’ responses were based on different attributes of the stimuli (...)
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  9. added 2014-03-04
    Perceptual Consciousness Overflows Cognitive Access.Ned Block - 2011 - Trends in Cognitive Sciences 15 (12):567-575.
    One of the most important issues concerning the foundations ofconscious perception centerson thequestion of whether perceptual consciousness is rich or sparse. The overflow argument uses a form of ‘iconic memory’ toarguethatperceptual consciousnessisricher (i.e.,has a higher capacity) than cognitive access: when observing a complex scene we are conscious of more than we can report or think about. Recently, the overflow argumenthas been challenged both empirically and conceptually. This paper reviews the controversy, arguing that proponents of sparse perception are committed to the (...)
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  10. added 2013-10-02
    Bodily Action and Distal Attribution in Sensory Substitution.Robert Briscoe - forthcoming - In Fiona Macpherson (ed.), Sensory Substitution and Augmentation. Proceedings of the British Academy.
    According to proponents of the sensorimotor contingency theory of perception (Hurley & Noë 2003, Noë 2004, O’Regan 2011), active control of camera movement is necessary for the emergence of distal attribution in tactile-visual sensory substitution (TVSS) because it enables the subject to acquire knowledge of the way stimulation in the substituting modality varies as a function of self-initiated, bodily action. This chapter, by contrast, approaches distal attribution as a solution to a causal inference problem faced by the subject’s perceptual systems. (...)
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  11. added 2013-07-11
    Placing Area MT in Context.Michael Madary - 2013 - Journal of Consciousness Studies 20 (5-6):93-104.
    In this article I raise empirical challenges for the claim tha area MT/V5 is the neural correlate for visual experience as of motion (Block 2005). In particular, I focus on the claim that there is matching content between area MT, on one hand, and visual experience as of motion, on the other hand (Chalmers 2000, Block 2007). I survey two lines of empirical evidence which challenge the claim of matching content in area MT. The first line of evidence covers new (...)
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  12. added 2013-02-18
    Against Division: Consciousness, Information and the Visual Streams.Wayne Wu - 2014 - Mind and Language 29 (4):383-406.
    Milner and Goodale's influential account of the primate cortical visual streams involves a division of consciousness between them, for it is the ventral stream that has the responsibility for visual consciousness. Hence, the dorsal visual stream is a ‘zombie’ stream. In this article, I argue that certain information carried by the dorsal stream likely plays a central role in the egocentric spatial content of experience, especially the experience of visual spatial constancy. Thus, the dorsal stream contributes to a pervasive feature (...)
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  13. added 2012-02-10
    The Brain and its States.Richard Brown - 2012 - In Shimon Edelman, Tomer Fekete & Neta Zach (eds.), Being in Time: Dynamical Models of Phenomenal Experience. John Benjamins. pp. 211-238.
    In recent times we have seen an explosion in the amount of attention paid to the conscious brain from scientists and philosophers alike. One message that has emerged loud and clear from scientific work is that the brain is a dynamical system whose operations unfold in time. Any theory of consciousness that is going to be physically realistic must take account of the intrinsic nature of neurons and brain activity. At the same time a long discussion on consciousness among philosophers (...)
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  14. added 2008-12-31
    A Re-Evaluation of Blindsight and the Role of Striate Cortex (V1) in Visual Awareness.Juha Silvanto - 2008 - Neuropsychologia.
    Some patients with a lesion to the striate cortex (V1), when assessed through forced-choice paradigms, are able to detect stimuli presented in the blind field, despite reporting a complete lack of visual experience. This phenomenon, known as blindsight, strongly implicates V1 in visual awareness. However, the view that V1 is indispensable for conscious visual perception is challenged by a recent finding that the blindsight subject GY can be aware of visual qualia in his blind field, implying that V1may not be (...)
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