Abstract
Experiments were designed to examine the imagery abilities of an agnosic patient, M.S., who has consistently shown more severe deficits in recognizing visually, and in retrieving knowledge of living as compared with non-living items. Judgements of visual similarity were required for named objects and for object-pictures, as well as for the factual properties of these stimuli. The same disproportionate difficulty in processing living ('natural') objects was found in these tasks as well as in forced-choice recognition. In contrast, no deficit was found on analogous tasks concerned with word-shape similarities. These findings have a bearing on concepts of semantic memory.
Publication types
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Case Reports
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Agnosia / diagnosis
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Agnosia / physiopathology*
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Agnosia / psychology
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Anomia / diagnosis
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Anomia / physiopathology
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Anomia / psychology
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Brain / physiopathology
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Brain Damage, Chronic / diagnosis
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Brain Damage, Chronic / physiopathology*
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Brain Damage, Chronic / psychology
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Brain Mapping
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Dominance, Cerebral / physiology
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Encephalitis / diagnosis
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Encephalitis / physiopathology
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Encephalitis / psychology
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Herpes Simplex / diagnosis
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Herpes Simplex / physiopathology
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Herpes Simplex / psychology
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Humans
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Imagination / physiology*
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Male
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Mental Recall / physiology*
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Neuropsychological Tests
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Pattern Recognition, Visual / physiology
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Visual Perception / physiology*