The functional role of interhemispheric synchronization in the control of bimanual timing tasks

被引:85
作者
Serrien, DJ [1 ]
Brown, P [1 ]
机构
[1] Inst Neurol, Sobell Dept Motor Neurosci & Movement Disorders, London WC1N 3BG, England
基金
英国医学研究理事会;
关键词
EEG; task-related coherence; functional coupling;
D O I
10.1007/s00221-002-1253-z
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The aim of the present study was to investigate whether synchronized activity between the right and left primary sensorimotor cortices has a functional role in the organization of bimanual in-phase and anti-phase movement patterns, performed at different cycling frequencies. To this end we evaluated the cortical dynamics by means of task-related EEG. Both behavioral performance and coupling between the primary sensorimotor cortices in the beta frequency band were reduced with increasing movement speed, and this effect was far more powerful in the anti-phase than in-phase mode. Thus, a progressive degradation of interhemispheric connectivity with cycling rate was associated with a deteriorating behavioral output. Overall, these results support a significant role for interhemispheric synchronization in the control of bimanual movements.
引用
收藏
页码:268 / 272
页数:5
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