UNSPECIFIED (2001) Mapping dissociations in verb morphology. [Journal Item]

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Abstract

Substantial behavioural and neuropsychological evidence has been amassed to support the dual-route model of morphological processing, which distinguishes between a rule-based system for regular items (walk-walked, call-called) and an associative system for the irregular items (go-went), Some neural-network models attempt to explain the neuropsychological and brain-mapping dissociations in terms of single-system associative processing. We show that there are problems in the accounts of homogeneous networks in the light of recent brain-mapping evidence of systematic double-dissociation. We also examine the superior capabilities of more internally differentiated connectionist models, which, under certain conditions, display systematic double-dissociations. It appears that the more differentiation models show, the more easily they account for dissociation patterns, yet without implementing symbolic computations.

Item Type:	Journal Item
Subjects:	B Philosophy. Psychology. Religion > BF Psychology R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Journal or Publication Title:	TRENDS IN COGNITIVE SCIENCES
Publisher:	ELSEVIER SCIENCE LONDON
ISSN:	1364-6613
Date:	July 2001
Volume:	5
Number:	7
Number of Pages:	8
Page Range:	pp. 301-308
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/11978

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