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Semantic Judgement Errors in Parkinson’s Disease: The Role of Priming

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Connectionist Models in Cognitive Neuroscience

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

Abstract

Recent studies of lexical-semantic performance errors in Parkinson’s Disease have supported the hypothesis that faulty retrieval processes, rather than degraded representations, have the greatest potential to give rise to observed clinical symptoms. In this study, semantic priming is used to demonstrate that providing context to patients is essential for correctly processing semantic information. Successful resolution of lexical ambiguity in a model semantic system is demonstrated at high levels of lateral inhibition, in the presence of semantically related target words, by activating less-dominant target word senses. It was found that 15 epochs of priming were required for a reduction in observed response latency and the correct word sense to be selected (i.e., a complete reversal of symptoms).

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Author information

Authors and Affiliations

  1. Department of Computing, Macquarie University, NSW, 2109, Australia

    Malti Patel & Paul A. Watters

Authors
  1. Malti Patel
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  2. Paul A. Watters
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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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Patel, M., Watters, P.A. (1999). Semantic Judgement Errors in Parkinson’s Disease: The Role of Priming. 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_11

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  • DOI: https://doi.org/10.1007/978-1-4471-0813-9_11

  • 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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