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Evidence that ventrolateral thalamotomy may eliminate the supraspinal component of both pathological and physiological tremors.

Authors
  • Duval, C
  • Panisset, M
  • Bertrand, G
  • Sadikot, A F
Type
Published Article
Journal
Experimental brain research
Publication Date
May 01, 2000
Volume
132
Issue
2
Pages
216–222
Identifiers
PMID: 10853946
Source
Medline
License
Unknown

Abstract

Ventrolateral (VL) thalamotomy produced a marked reduction of oscillations related to the supraspinal components of Parkinson's disease tremor (4-7 Hz) and physiological tremor (8-12 Hz). Finger tremor was examined in nine patients undergoing unilateral VL thalamotomy and in nine age-matched controls. In comparison to the preoperative state, the relative percentage of power within the 7.6-12.5 Hz band did not increase after the surgical procedure. Furthermore, the amount of absolute power within the 7.6-12.5 Hz band was much lower for post-surgical patients in comparison to matched controls when periods of tremor having equal amplitudes were compared. These results suggest that VL thalamotomy interrupts a common circuit involved in the supraspinal component of both physiological and pathological tremors. We provide evidence that the thalamus may be involved in circuits generating physiological tremor in humans.

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