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Department of Neurology (Dr. Coslett), Temple University Hospital, Philadelphia, PA; and the Department of Neurology (Drs. Bowers and Heilman), College of Medicine, University of Florida, and Veterans Adminiatration Medical Center, Gainesville, FL.
Destruction or disconnection of specific neuronal structures or failure to activate those structures may impair brain function. Because the right hemisphere seems dominant for mediating arousal, which is an important determinant of the capacity for cerebral activation, we predicted that subjects with right hemisphere damage would have a greater reduction in the capacity for cerebral activation than subjects with left hemisphere damage. A paradigm requiring that two simple tasks be performed singly and simultaneously was used to assess the capacity for activation. Subjects with right hemisphere damage had significantly greater impairment in the capacity for cerebral activation than subjects with left hemisphere damage. This impairment may partly explain the associations between right hemisphere damage and decreased ability to perform certain analytic and linguistic tasks.
Address correspondence and reprint requests to Dr. Coslett, Department of Neurology, Temple University Hospital, Broad and Ontario Streets, Philadelphia, PA 19140.
Supported by the Medical Research Service of the Veterans Administration, Memory Disorder Clinic State of Florida, and by Teacher-Investigator Development award 5-KO7NS00876 from the National Institute of Neurological and Communicative Diseases and Stroke to Dr. Coslett.
Presented in part at the thirty-sixth annual meeting of the American Academy of Neurology, Boston, MA, April 1984.
Received April 10, 1986. Accepted for publication in final form October 2, 1986.
This article has been cited by other articles:
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  A Farne, L J Buxbaum, M Ferraro, F Frassinetti, J Whyte, T Veramonti, V Angeli, H B Coslett, and E Ladavas Patterns of spontaneous recovery of neglect and associated disorders in acute right brain-damaged patients J. Neurol. Neurosurg. Psychiatry, October 1, 2004; 75(10): 1401 - 1410. [Abstract] [Full Text] [PDF]
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