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Full Description
The papers in the special issue describe computational models and principles that attempt to explain the performance of brain damaged subjects. The models elucidate the cognitive processes that underlie speaking, reading, spelling, and visuospatial planning by implementing hypothesized mechanisms and then identifying the consequences of specific "lesions" in these mechanisms for the model's behaviour which, in turn, is related to the subjects' behaviour. Although most of the presented models view cognitive mechanisms in connectionist or neural-network terms, they exhibit considerable variety in their underlying cognitive theories, their approach to modelling pathology, and particularly in how they use models to draw conclusions about theory.
Contents
Dilkina, McClelland, Plaut, A Single-system Account of Semantic and Lexical Deficits in Five Semantic Dementia Patients. Nickels, Biedermann, Coltheart, Saunders, Tree, Computational Modelling of Phonological Dyslexia: How Does the DRC Model Fare? Cutini, Di Ferdinando, Basso, Bisiacchi, Zorzi, Visuospatial Planning in the Travelling Salesperson Problem: A Connectionist Account of Normal and Impaired Performance. Goldberg, Rapp, Is Compound Chaining the Serial Order Mechanism of Spelling? A Simple Recurrent Network Investigation. Knobel, Finkbeiner, Caramazza, The Many Places of Frequency: Evidence For a Novel Locus of the Lexical Frequency Effect in Word Production. Goldrick, Does Like attract Like? Exploring the Relationship Between Errors and Representational Similarity in Connectionist Networks.
