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hemiballismus

   Also found in: Encyclopedia, Wikipedia 0.02 sec.
hemiballismus /hemi·bal·lis·mus/ (-bah-liz´mus) a violent form of dyskinesia involving one side of the body, most marked in the upper limb.
hem·i·bal·lis·mus (hm-b-lzms) or hem·i·bal·lism (-blzm)
n.
Violent writhing and muscle spasms involving one side of the body, usually caused by a lesion of the subthalamic nucleus of the opposite side of the brain.
hemiballismus.
See ballismus.
hemiballism, hemiballismus
violent motor restlessness of half of the body, most marked in the upper extremity.


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Since transient "positive" local signs are often encountered as a manifestation of neurologic events associated with a small acute hemorrhage, as illustrated by hemiballismus associated with hemorrhage in the subthalamic nucleus, this case provides substantial support for the concept that central tinnitus might indeed represent a pathologic activation of neural networks of nonspecific auditory perception.
Central tinnitus: A case report. (Original Article) by Nakada, Tsutomu / Ear, Nose and Throat Journal
[13] Disruption of excitatory projections from the STN to the motor circuit is thought to result in hemiballismus.
Sensorimotor contributions of the basal ganglia: recent advances by Abbs, James H. / Physical Therapy
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