Category specific semantic deficits in focal and widespread brain damage: A computational account (1998)
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BibTeX
@MISC{Gonnerman98categoryspecific,
author = {Laura M. Gonnerman and Elaine S. Andersen and Mark S. Seidenberg and Joseph T. Devlin and Joseph T. Devlin and Hedco Neuroscience Bldg},
title = {Category specific semantic deficits in focal and widespread brain damage: A computational account},
year = {1998}
}
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Abstract
This paper presents a computational model of how category specific semantic deficits resulting from two types of brain injury can arise in a single semantic system without explicit category representations. Category specific impairments resulting from focal brain damage have been explained by predominant damage to a specific type of feature: perceptual in the case of natural kinds, functional in the case of artifacts. Perceptual features are assumed to be stored in temporolimbic areas while functional features are stored in frontoparietal regions. Damage localized to either region preferentially disrupts the semantic information in that region resulting in a category specific impairment. Recent reports of category specific impairments in Alzheimer's disease, a pathology of widespread, patchy damage affecting both temporolimbic and frontoparietal regions, raises the question: Can a single theory explain category specific impairments arising from these highly different pathologies? Mod...
