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A Fundamental Limitation of the Conjunctive Codes Learned in PDP Models of Cognition: Comment on Botvinick and Plaut (2006)
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Bowers, Jeffrey S.; Damian, Markus F.; Davis, Colin J. – Psychological Review, 2009
A central claim shared by most recent models of short-term memory (STM) is that item knowledge is coded independently from order in long-term memory (LTM; e.g., the letter A is coded by the same representational unit whether it occurs at the start or end of a sequence). Serial order is computed by dynamically binding these item codes to a separate…
Descriptors: Short Term Memory, Models, Coding, Orthographic Symbols
On the Biological Plausibility of Grandmother Cells: Implications for Neural Network Theories in Psychology and Neuroscience
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Bowers, Jeffrey S. – Psychological Review, 2009
A fundamental claim associated with parallel distributed processing (PDP) theories of cognition is that knowledge is coded in a distributed manner in mind and brain. This approach rejects the claim that knowledge is coded in a localist fashion, with words, objects, and simple concepts (e.g. "dog"), that is, coded with their own dedicated…
Descriptors: Cytology, Brain, Schemata (Cognition), Neurological Organization