The Influence of Misnaming on Object Recognition: A Case of Multimodal Agnosia

We present a case of multimodal agnosia in the visual and tactile modality due to an infarction in the territory of the left posterior cerebral artery. The patient's ability to recognize objects fluctuated depending on his verbal activity. When he misnamed presented objects, he tended to use th...

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Bibliographic Details
Published inCortex Vol. 37; no. 2; pp. 175 - 186
Main Authors Ohtake, Hiroya, Fujii, Toshikatsu, Yamadori, Atsushi, Fujimori, Misato, Hayakawa, Yuko, Suzuki, Kyoko
Format Journal Article
LanguageEnglish
Published Italy Elsevier Srl 2001
Subjects
Aged
Agnosia - pathology
Agnosia - psychology
Brain Injuries - pathology
Brain Injuries - psychology
Form Perception - physiology
Humans
Magnetic Resonance Imaging
Male
misnaming
Neuropsychological Tests
optic aphasia
Speech
tactile agnosia
top-down regulation
Verbal Behavior
visual agnosia
tactile agnosia
visual agnosia
top-down regulation
misnaming
optic aphasia
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Summary:We present a case of multimodal agnosia in the visual and tactile modality due to an infarction in the territory of the left posterior cerebral artery. The patient's ability to recognize objects fluctuated depending on his verbal activity. When he misnamed presented objects, he tended to use them and to draw them in keeping with the wrong name. We submit that the mechanism causing associative agnosia is more dynamic than it was hitherto considered. It originates from the rivalry between top-down central regulation and bottom-up peripheral flow
Bibliography:ObjectType-Case Study-2
SourceType-Scholarly Journals-1
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ISSN:0010-9452
1973-8102
DOI:10.1016/S0010-9452(08)70566-5