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Hemispheric contributions to manual communication (signing and finger-spelling)

Department of Neurology, University of Texas Health Science Center (Drs. Homan and Ross), and the Regional Epilepsy Center (Dr. Homan), VA Medical Center, Dallas, TX, the Deaf Action Center (Dr. Criswell), Dallas, TX, and the Health Science Center Hospital, University of British Columbia (Dr. Wada), Vancouver, Canada.

The neurology of manual communication was evaluated by intracarotid injection of amobarbital sodium in a patient who had learned speech and manual communication (signing) simultaneously. Hemispheric dominance for the prepositional components of manual communication and spoken language were the same, except that lateralization was less complete. The right hemisphere contributed to both prepositional and emotional components of manual communication.

Address correspondence and reprint requests to Dr. Homan, VA Hospital, Department of Neurology, 4500 South Lancaster Road, Dallas, TX 75216.

Accepted for publication February 24, 1982.