Cortical processes associated with continuous balance control as revealed by EEG spectral power
Cortical processes associated with continuous balance control as revealed by EEG spectral power
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DOI：
10.1016/j.neulet.2015.02.049
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发表时间：
2015-04-10
影响因子：
2.5
通讯作者：
Strueder, H. K.
中科院分区：
文献类型：
--
作者：
Huelsduenker, T.;Mierau, A.;Strueder, H. K.
平衡是许多日常活动的重要组成部分，如运动。先前的研究已经报道了在短暂的平衡不稳定期间皮质θ活动的明显变化。然而，仍然很少了解的神经机制的持续平衡控制。本研究旨在探讨大脑皮层在不同难度的连续平衡任务中的theta活动，以及探讨theta活动与平衡绩效之间的关系。37名受试者完成了9项不同表面稳定性和支撑基础的平衡任务。在整个平衡任务中，从32个头皮位置记录脑电图（EEG）。应用基于ICA的伪影抑制，并在theta频带中分析频谱功率。当平衡任务变得更具挑战性时，大脑皮层的额叶、中央和顶叶区域的θ功率会增加。此外，额中央和中央顶叶θ功率与平衡性能。这项研究表明，在持续的平衡任务中，大脑皮层参与维持直立姿势。具体而言，结果强调了额叶和顶叶θ振荡在平衡控制中的重要作用。(C)2015爱思唯尔爱尔兰有限公司版权所有。
Balance is a crucial component in numerous every day activities such as locomotion. Previous research has reported distinct changes in cortical theta activity during transient balance instability. However, there remains little understanding of the neural mechanisms underlying continuous balance control. This study aimed to investigate cortical theta activity during varying difficulties of continuous balance tasks, as well as examining the relationship between theta activity and balance performance. 37 subjects completed nine balance tasks with different levels of surface stability and base of support. Throughout the balancing task, electroencephalogram (EEG) was recorded from 32 scalp locations. ICA-based artifact rejection was applied and spectral power was analyzed in the theta frequency band. Theta power increased in the frontal, central, and parietal regions of the cortex when balance tasks became more challenging. In addition, fronto-central and centro-parietal theta power correlated with balance performance. This study demonstrates the involvement of the cerebral cortex in maintaining upright posture during continuous balance tasks. Specifically, the results emphasize the important role of frontal and parietal theta oscillations in balance control. (C) 2015 Elsevier Ireland Ltd. All rights reserved.