Brain, Vol. 109, No. 2, 293-305, 1986
© 1986 Oxford University Press
research-article |
HYPOMETRIA WITH HEMISPATIAL AND LIMB MOTOR NEGLECT
Department of Neurology, College of Medicine, University of Florida, and the Veterans Administration Medical Center Gainesville, Florida, USA
Correspondence to:
Dr Kimford J. Meador, Department of Neurology, Medical College of Georgia, Augusta, GA 30912
A patient with a haemorrhage in the right mesial frontal lobe exhibited hypokinesia, bradykinesia and a hypometric movement disorder of his contralateral limbs. This movement disorder was characterized by reduced amplitude of otherwise normally formed movements (hypometria). In addition, the left limb hypokinesia improved with placement of the left forelimb into right hemispace (hemispatial motor neglect) We postulate that the hypokinesia, bradykinesia and hypometria were induced by reduction in activation of forebrain dopaminergic and basal ganglion motor systems, which in conjunction with the supplementary motor area are critical for setting the activational level for motor output.
Received January 18, 1985. Revised June 18, 1985. Accepted July 2, 1985.
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