EEG correlates of haptic feedback in a visuomotor tracking task
EEG correlates of haptic feedback in a visuomotor tracking task
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DOI：
10.1016/j.neuroimage.2012.02.008
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发表时间：
2012-05-01
期刊：
影响因子：
5.7
通讯作者：
Jung, Tzyy-Ping
中科院分区：
文献类型：
--
作者：
Lin, Chun-Ling;Shaw, Fu-Zen;Jung, Tzyy-Ping
本研究旨在探讨视觉追踪任务中触觉反馈对大脑的影响。触觉反馈与偏差相关的力量被用于整个跟踪实验中，受试者的行为反应和脑电图（EEG）数据同时测量。独立分量分析被用来将采集到的脑电信号分解成时间上独立的时间过程，这些时间过程来自不同的脑源。聚类分析被用来提取独立的组件，在参与者之间是可比的。由此产生的独立的大脑过程进行了进一步分析，通过时间-频率分析（事件相关的频谱扰动）和事件相关的相干性（ERCOH），以对比大脑活动在跟踪实验有或没有触觉反馈。在受试者中，在触觉反馈的时代，在右运动区或附近具有等效偶极子的组件表现出更大的α波段功率抑制。在左额叶、中央、左电机、右电机和顶叶区域中或附近具有等效偶极子的组件表现出更大的β波段功率抑制，而在左额叶、左电机和右电机区域中或附近具有等效偶极子的组件相对于非触觉条件表现出更大的γ波段功率抑制。相比之下，与非触觉条件相比，右枕骨组件集群在具有触觉反馈的时期中表现出较少的β频带功率抑制。ERCOH分析的六个组成部分集群的结果表明，有显着增加不同的大脑网络之间的一致性，在响应触觉反馈相对于触觉反馈不存在时观察到的一致性。这项研究的结果提供了新的见解触觉反馈对大脑的影响，并可能有助于开发新的工具，以促进运动技能的学习。(C)2012 Elsevier Inc. All rights reserved.
This study investigates the temporal brain dynamics associated with haptic feedback in a visuomotor tracking task. Haptic feedback with deviation-related forces was used throughout tracking experiments in which subjects' behavioral responses and electroencephalogram (EEG) data were simultaneously measured. Independent component analysis was employed to decompose the acquired EEG signals into temporally independent time courses arising from distinct brain sources. Clustering analysis was used to extract independent components that were comparable across participants. The resultant independent brain processes were further analyzed via time-frequency analysis (event-related spectral perturbation) and event-related coherence (ERCOH) to contrast brain activity during tracking experiments with or without haptic feedback. Across subjects, in epochs with haptic feedback, components with equivalent dipoles in or near the right motor region exhibited greater alpha band power suppression. Components with equivalent dipoles in or near the left frontal, central, left motor, right motor, and parietal regions exhibited greater beta-band power suppression, while components with equivalent dipoles in or near the left frontal, left motor, and right motor regions showed greater gamma-band power suppression relative to non-haptic conditions. In contrast, the right occipital component cluster exhibited less beta-band power suppression in epochs with haptic feedback compared to non-haptic conditions. The results of ERCOH analysis of the six component clusters showed that there were significant increases in coherence between different brain networks in response to haptic feedback relative to the coherence observed when haptic feedback was not present. The results of this study provide novel insight into the effects of haptic feedback on the brain and may aid the development of new tools to facilitate the learning of motor skills. (C) 2012 Elsevier Inc. All rights reserved.