• J Clin Neurosci · Aug 2013

    Case Reports

    Usefulness of the coherence entrainment test for deep brain stimulation for a patient with atypical tremor.

    • Yu Hasegawa, Kazumichi Yamada, Ken Uekawa, Tadashi Hamasaki, Noboru Fujise, and Jun-ichi Kuratsu.
    • Department of Neurosurgery, Graduate School of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto-shi, Kumamoto-ken 8608556, Japan. fpmhasse@yahoo.co.jp
    • J Clin Neurosci. 2013 Aug 1; 20 (8): 1161-2.

    AbstractA 40-year-old man with an anxiety disorder developed sudden-onset right-hand tremor after a fixation wire for a tibial bone fracture was removed. He manifested a resting and action tremor with an irregular pattern. A coherence entrainment test (CET) revealed that the peak power spectral frequency of the right finger tremor was not entrained by simultaneous voluntary left finger tapping, which indicated a non-psychogenic origin. Deep brain stimulation to the left thalamic ventral intermediate nucleus abolished the tremor. We concluded that CET can determine the surgical indications for an unusual tremor that must be differentiated from that of psychogenic origin. Copyright © 2013 Elsevier Ltd. All rights reserved.

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