Intermuscular coherence in Parkinson's disease: effects of subthalamic nucleus stimulation

被引：31
|
作者：
Marsden, J
Limousin-Dowsey, P
Fraix, V
Pollak, P
Odin, P
Brown, P
机构：
[1] Inst Neurol, MRC, Human Movement & Balance Unit, London WC1N 3BG, England
[2] Univ Grenoble 1, Dept Clin & Biol Neurosci, Grenoble, France
[3] Univ Marburg, Dept Neurol, Marburg, Germany
来源：
NEUROREPORT | 2001年 / 12卷 / 06期
关键词：
coherence; motor control; oscillations; Parkinson's disease; subthalamic nucleus stimulation;
D O I：
10.1097/00001756-200105080-00013
中图分类号：
Q189 [神经科学];
学科分类号：
071006 ;
摘要：
It remains unclear how high frequency stimulation of the subthalamic nucleus (STN) improves parkinsonism. We hypothesized that stimulation may affect the organization of the cortical drive to voluntarily activated muscle. Normally this is characterized by oscillations at 15-30 Hz, manifest in coherence between muscles in the same frequency band. We therefore investigated the effects of STN stimulation on electromyographic (EMG) activity in co-contracting distal arm muscles in nine subjects with Parkinson's disease off drugs. Without stimulation, coherence between EMG signals was diminished at 15-30 Hz compared with nine controls. STN stimulation increased coherence in the 15-30 Hz band, so that it approached that in healthy subjects. The results suggest that STN stimulation facilitates the normal cortical drive to muscles. NeuroReport 12:1113-1117 (C) 2001 Lippincott Williams & Wilkins.
引用
收藏
页码：1113 / 1117
页数：5
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