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Robert T. Watson, MD; W. Shepherd Fleet, MD; Leslie Gonzalez-Rothi, PhD; Kenneth M. Heilman, MD

Arch Neurol. 1986;43(8):787-792.

Abstract
• Anatomical, electrophysiological, and cerebral blood flow studies suggest that the supplementary motor area (SMA) may be important for programming certain skilled motor acts of the limbs. However, to our knowledge, abnormalities of complex distal motor behavior following SMA lesions have not been reported. We have studied two patients with left mesial hemisphere infarctions that included the SMA. These patients had bilateral ideomotor apraxia for transitive limb movements without buccofacial apraxia. The observations suggest that the types of skilled motor acts programmed by the left SMA are learned transitive limb movements.

Author Affiliations
From the Department of Neurology, University of Florida College of Medicine, Gainesville (Drs Watson and Fleet), and the Veterans Administration Medical Center, Gainesville, Fla (Drs Gonzalez-Rothi and Heilman).

Footnotes
Accepted for publication Oct 20, 1985.

Reprint requests to Department of Neurology, Box J236, University of Florida College of Medicine, Gainesville, FL 32610 (Dr Watson).

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