Neurophysiological Correlates of Adaptation and Interference during Asymmetrical Bimanual Movements
Neurophysiological Correlates of Adaptation and Interference during Asymmetrical Bimanual Movements
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DOI：
10.1016/j.neuroscience.2020.01.044
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发表时间：
2020-04-15
期刊：
影响因子：
3.3
通讯作者：
Kagerer, Florian A.
中科院分区：
文献类型：
--
作者：
Desrochers, Phillip C.;Brunfeldt, Alexander T.;Kagerer, Florian A.
在这项研究中，我们研究了双手运动过程中双手之间干扰时的大脑动态。参与者执行双手中心向外伸手任务，其中对右手施加视觉运动旋转，而左手没有收到其运动的视觉反馈。这种操作导致适应右手对动觉引导的左手的干扰。任务期间的脑电图 (EEG) 记录显示，高和低 β 频段的光谱功率在暴露早期有所升高，但在整个学习过程中有所下降。这可能代表了内部运动模型的基于误差的更新。此外，在视觉运动旋转的初始呈现期间，半球内部和半球之间的β频率的一致性（衡量神经功能连接性的指标）均升高，然后在整个适应过程中降低。这表明β振荡神经活动可能是半球之间冲突运动信息传输的标志，这表现为不对称双手运动期间双手之间的干扰。 (C) 2020 国际广播组织。由爱思唯尔有限公司出版。保留所有权利。
In this study, we investigated brain dynamics during interference between hands during bimanual movements. Participants performed a bimanual center-out reaching task in which a visuomotor rotation was applied to the right hand while the left hand did not receive visual feedback of its movements. This manipulation resulted in interference from the adapting right hand to the kinesthetically guided left hand. Electroencephalography (EEG) recordings during the task showed that spectral power in the high and low beta frequency bands was elevated early in exposure, but decreased throughout learning. This may be representative of error-based updating of internal models of movement. Additionally, coherence, a measure of neural functional connectivity, was elevated both within and between hemispheres in the beta frequencies during the initial presentation of the visuomotor rotation, and then decreased throughout adaptation. This suggests that beta oscillatory neural activity may be marker for transmission of conflicting motor information between hemispheres, which manifests in interference between the hands during asymmetrical bimanual movements. (C) 2020 IBRO. Published by Elsevier Ltd. All rights reserved.