Visual Agnosia-Prosopagnosia

Abstract

Occlusive vascular disease of the posterior cerebral arteries produced infarction destroying the left medial occipital area, the splenium of the corpus callosum, and the right inferior longitudinal fasciculus of a patient with visual agnosia. Some of the reported neurobehavioral abnormalities (alexia without agraphia, color agnosia, and verbal memory defect) were readily correlated with the observed lesions. Other abnormalities, particularly the visual agnosia and prosopagnosia, are less common, but tentative anatomical correlations can be postulated. The involvement of the nondominant inferior longitudinal fasciculus would appear to be particularly meaningful.