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Spatial vision in Alzheimer's disease. General findings and a case report.
Arch Neurol ; 42(7): 667-71, 1985 Jul.
Article en En | MEDLINE | ID: mdl-4015463
ABSTRACT
Visual contrast sensitivity to sinusoidal gratings of five spatial frequencies was measured in 15 patients with Alzheimer's disease and in eight control subjects. Contrast sensitivity thresholds were elevated at all frequencies in 14 patients compared with control subjects. The 15th patient was unique she had an impairment in object and face recognition so severe that she could not recognize her husband visually. Her sensitivity to low and intermediate frequencies was markedly reduced in relation to that of other patients, whereas her sensitivity to the highest frequency tested equaled theirs. These observations emphasize the importance of low spatial frequency information for visual object and face recognition.
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Banco de datos: MEDLINE Asunto principal: Fenómenos Fisiológicos Sanguíneos Tipo de estudio: Diagnostic_studies Idioma: En Año: 1985 Tipo del documento: Article
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Banco de datos: MEDLINE Asunto principal: Fenómenos Fisiológicos Sanguíneos Tipo de estudio: Diagnostic_studies Idioma: En Año: 1985 Tipo del documento: Article