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Exploration of motor cortex excitability in a diabetic patient with hemiballism–hemichorea
Author(s) -
Ziemann Ulf,
Koc John,
Reimers CarlDetlev,
Finkenstaedt Michael,
Paulus Walter
Publication year - 2000
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/1531-8257(200009)15:5<1000::aid-mds1037>3.0.co;2-e
Subject(s) - basal ganglia , transcranial magnetic stimulation , striatum , neuroscience , context (archaeology) , motor cortex , magnetic resonance imaging , deep brain stimulation , medicine , cortex (anatomy) , psychology , physical medicine and rehabilitation , stimulation , central nervous system , parkinson's disease , radiology , biology , dopamine , paleontology , disease
Hemiballism–hemichorea in older patients with hyperglycemia, associated with high signal intensity in the contralateral striatum on T1‐weighted magnetic resonance scans, is now an accepted clinical entity. We present an additional patient with this disorder. Using transcranial magnetic stimulation, we show that intracortical inhibition in the motor cortex contralateral to hemiballism–hemichorea is increased. This finding is discussed in the context of current models of basal ganglia‐thalamo‐cortical connectivity.