Antagonist Muscle Prefatigue Increases the Intracortical Communication between Contralateral Motor Cortices during Elbow Extension Contraction.
Antagonist Muscle Prefatigue Increases the Intracortical Communication between Contralateral Motor Cortices during Elbow Extension Contraction.
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拮抗肌预疲劳增加肘部伸展收缩期间对侧运动皮质之间的皮质内通讯
DOI：
10.1155/2017/8121976
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发表时间：
2017
影响因子：
--
通讯作者：
Lu A
中科院分区：
文献类型：
--
作者：
Wang L;Ma A;Wang Y;You S;Lu A
为了研究与拮抗性肌肉预疲劳相关的皮质-皮质耦合变化，我们记录了12名年轻男性志愿者在持续疲劳性屈肘收缩前后30秒、目标力量水平为20%MVC的非疲劳等长伸肘收缩过程中FC3、C3、FC4和C4电极的脑电。计算疲劳前后伸肘收缩的α频段和β频段的脑电-脑电同步指数。FC3-C3脑电之间的β频段相位同步指数显著增加。增加的相位同步指数可能反映了对侧运动皮质与拮抗性肌肉预疲劳之间信号的皮质内通讯或整合增强，这可能与中枢调制有关，以补偿拮抗性肌肉预疲劳引起的关节不稳定。
To investigate the cortico-cortical coupling changes related to antagonist muscle prefatigue, we recorded EEG at FC3, C3, FC4, and C4 electrodes of twelve young male volunteers during a 30-second-long, nonfatiguing isometric elbow extension contraction with a target force level of 20% MVC before and after a sustained fatiguing elbow flexion contraction until task failure. EEG-EEG phase synchronization indices in alpha and beta frequency bands were calculated for the pre- and postfatigue elbow extension contractions. The phase synchronization index in the beta frequency band was found significantly increased between EEG of FC3-C3. The increased phase synchronization index may reflect an enhanced intracortical communication or integration of the signals between contralateral motor cortices with antagonist muscle prefatigue, which may be related to the central modulation so as to compensate for the antagonist muscle prefatigue-induced joint instability.
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影响因子：
3
作者：
Vollestad, NK
通讯作者：
Vollestad, NK
影响因子：
2
作者：
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通讯作者：
Gong, Mingxin
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作者：
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通讯作者：
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