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Casey O'Callaghan
Washington University in St. Louis
  1. Synesthesia vs. crossmodal illusions.Casey O'Callaghan - 2017 - In Ophelia Deroy (ed.), Sensory Blendings: New Essays on Synaesthesia. Oxford, UK: pp. 45-58.
    We can discern two opposing viewpoints regarding synesthesia. According to the first, it is an oddity, an outlier, or a disordered condition. According to the second, synesthesia is pervasive, driving creativity, metaphor, or language itself. Which is it? Ultimately, I favor the first perspective, according to which cross-sensory synesthesia is an outlying condition. But the second perspective is not wholly misguided. My discussion has three lessons. First, synesthesia is just one of a variety of effects in which one sense modality (...)
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  2.  56
    Perceptual Expertise, Universality, and Objectivity.Casey O'Callaghan - 2023 - Philosophical Studies.
    Perceptual malleability and diversity can stem from perceptual learning, expertise, genetics, disease, or accident. Perceptual malleability and diversity force us to reject the claim that perceptual capacities, perceptual experience, and perceptual content are universal across subjects and times. And it casts doubt on the presumption of a universal human perceptual nature. However, it does not directly challenge perceptual objectivity, understood as the claim that one can perceive a world of things and features that are independent from oneself and one's experiences (...)
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  3. Multisensory evidence.Casey O'Callaghan - 2020 - Philosophical Issues 30 (1):238-256.
    It is tempting to think that one’s perceptual evidence comprises just what issues from perceiving with each of the respective sensory modalities. However, empirical, rational, and phenomenological considerations show that one’s perceptual evidence can outstrip what one possesses due to perceiving with each separate sense. Some novel perceptual evidence stems from the coordinated use of multiple senses. This paper argues that some perceptual evidence in this respect is distinctively multisensory.
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    Crossmodal identification.Casey O'Callaghan - 2023 - In Aleksandra Mroczko-Wasowicz & Rick Grush (eds.), Sensory Individuals: Unimodal and Multimodal Perspectives. Oxford University Press. pp. 331-354.
    In crossmodal identification, a subject token identifies an item perceived in one sensory modality with an item perceived in another sensory modality. Does crossmodal identification always occur in cognition, or does crossmodal identification sometimes take place in perception? This paper argues that crossmodal identification occurs in cognition, and not in perception. Nevertheless, multisensory perception is not unalive to crossmodal identity. Experimental evidence demonstrates that perception is differentially sensitive to the identity of individuals presented to distinct senses. Such sensitivity enhances recognition (...)
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  5. Senses as Capacities.Casey O'Callaghan - 2021 - Multisensory Research 34:233-259.
    This paper presents an account of the senses and what differentiates them that is compatible with richly multisensory perception and consciousness. According to this proposal, senses are ways of perceiving. Each sense is a subfaculty that comprises a collection of perceptual capacities. What each sense shares and what differentiates one sense from another is the manner in which those capacities are exercised. Each way of perceiving involves a distinct type of information gathering, individuated by the information it functions to extract (...)
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