Hemispheric Specialization and the Neurology of Emotion

doi:10.1001/archneur.1983.04050040025003

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Vol. 40 No. 4, April 1983

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Hemispheric Specialization and the Neurology of Emotion

David M. Bear, MD

Arch Neurol. 1983;40(4):195-202.

Abstract

• The regulation of such biologic drives as sex and aggressionis a critical evolutionary function required of the nervoussystem. There is evidence that, in humans, the right hemisphereis dominant for many "emotional" functions. In the corticalregions involved in emotion, there are two important, complementary,sensorilimbic connective pathways: a dorsal system criticalfor surveillance, attention, and arousal and a ventral systemspecialized for stimulus identification, learning, and emotionalresponse. Hemispheric specialization may introduce lateral asymmetriesin these sensorilimbic connections, which could account forcontrasting dominance in both emotional functions and some cognitivedomains.

Author Affiliations

From the Department of Psychiatry, Harvard Medical School and the Sections of Neurology and Psychiatry, New England Deaconess Hospital, Boston.

Footnotes

Accepted for publication Aug 27, 1982.

Reprint requests to 110 Francis St, Suite 4A, Boston, MA 02215(Dr Bear).

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