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What Causes Lexical Access Difficulties in Dementia? The Role of Covert Category-specificity

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Connectionist Models in Cognitive Neuroscience

Part of the book series: Perspectives in Neural Computing ((PERSPECT.NEURAL))

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Abstract

We discuss a model of speech production in which semantic specifications access phonological forms directly. We examine the form of the semantic representation that drives lexicalization. We describe the determinants of successful lexical access in dementia, emphasising the role of perceptual and functional components of word meanings. Word meaning is best conceptualised in terms of semantic microfeatures that encode perceptual, functional, taxonomie, and other information.

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Author information

Authors and Affiliations

  1. Department of Psychology, University of Dundee, Dundee, DDI 4HN, Scotland

    Trevor A. Harley

  2. School of Social Sciences, University of Abertay, Dundee, DDI INJ, Scotland

    Siobhan B. G. MacAndrew

Authors
  1. Trevor A. Harley
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  2. Siobhan B. G. MacAndrew
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Editor information

Editors and Affiliations

  1. School of Psychology, University of Birmingham, Birmingham, B15 2TT, UK

    Dietmar Heinke PhD , Glynn W. Humphreys PhD  & Andrew Olson PhD ,  & 

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© 1999 Springer-Verlag London Limited

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Harley, T.A., MacAndrew, S.B.G. (1999). What Causes Lexical Access Difficulties in Dementia? The Role of Covert Category-specificity. In: Heinke, D., Humphreys, G.W., Olson, A. (eds) Connectionist Models in Cognitive Neuroscience. Perspectives in Neural Computing. Springer, London. https://doi.org/10.1007/978-1-4471-0813-9_13

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  • DOI: https://doi.org/10.1007/978-1-4471-0813-9_13

  • Publisher Name: Springer, London

  • Print ISBN: 978-1-85233-052-1

  • Online ISBN: 978-1-4471-0813-9

  • eBook Packages: Springer Book Archive

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