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Department of Neurology, Michael Reesr Hospital and Medical Center. Chicago. IL.
We evaluated 41 patients with unilateral right hemisphere strokes for hemiparesis, hemianopia, constructional apraxia, neglect, extinction, unilateral spatial neglect on drawing (USND), dressing apraxia, anosognosia, prosopagnosia, and motor impersistence. Low correlations were found among USND, neglect, and extinction. Constructional apraxia showed a higher correlation with USND than with hemianopia. Motor impersistence and anosognosia correlated with the severity of the hemiplegia. Left neglect, motor impersistence, and anosognosia tended to occur only with large strokes. Injury to the right parietal lobe appears to be an important determinant of USND and constructional apraxia. In most cases of motor impersistence, left neglect, and anosognosia, there was injury to the right parietal lobe and also to structures beyond the parietal lobe. In two cases, small deep lesions produced behavioral abnormalities comparable to those of larger superficial cortical lesions.
Address correspondence and reprint requests to Dr. Hier. Department of Neurology, Michael Reese Hospital and Medical Center, 2900 S. Ellis Avenue, Chicago, IL 60616.
Supported by a research grant from the AMOCO Foundation.
Presented at thirty-fourth annual meeting of the American Academy of Neurology, Washington, DC, April 1982.
Accepted for publication July 1, 1982.
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