Exploring potential social influences on brain potentials during anticipation of tactile stimulation
Exploring potential social influences on brain potentials during anticipation of tactile stimulation
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探索预期触觉刺激期间社会对大脑电位的潜在影响
DOI：
10.1016/j.brainres.2017.01.022
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发表时间：
2017
期刊：
影响因子：
2.9
通讯作者：
Marshall, Peter J.
中科院分区：
文献类型：
--
作者：
Shen, Guannan;Saby, Joni N.;Drew, Ashley R.;Marshall, Peter J.
本研究探讨了在触觉刺激预期过程中，人际关系对电生理反应的影响。众所周知，在预警提示和触觉刺激之间的事件相关电位（ERP）中存在广泛的负向电位。还表明，在预期手部触觉刺激期间，α范围μ节律在中央电极部位上显示出偏侧去极化。目前的研究使用了触觉辨别任务，其中视觉提示表明，即将到来的刺激将在1500 ms后传递到参与者的手，任务伙伴的手，或两个人。对于参与者预期对自己的手的触觉刺激的条件，在触觉刺激之前的1000 ms内在ERP中的中央部位观察到负电位（偶然负变，CNV）。在同一时间窗内也存在显著的mu节律去极化。在右手刺激之前，对侧的ERPs和mu去极化的幅度大于同侧半球。类似的ERP和EEG的变化不存在时，视觉提示表明，刺激将被传递到任务的合作伙伴或没有人。在预期的触觉刺激的社会影响的情况下，和预期的注意力（CNV和亩节奏）的两个大脑签名之间的关系进行了讨论。
This study explored interpersonal influences on electrophysiological responses during the anticipation of tactile stimulation. It is well-known that broad, negative-going potentials are present in the event-related potential (ERP) between a forewarning cue and a tactile stimulus. It has also been shown that the alpha-range mu rhythm shows a lateralized desynchronization over central electrode sites during anticipation of tactile stimulation of the hand. The current study used a tactile discrimination task in which a visual cue signaled that an upcoming stimulus would either be delivered 1500 ms later to the participant’s hand, to a task partner’s hand, or to neither person. For the condition in which participants anticipated the tactile stimulation to their own hand, a negative potential (contingent negative variation, CNV) was observed in the ERP at central sites in the 1000 ms prior to the tactile stimulus. Significant mu rhythm desynchronization was also present in the same time window. The magnitudes of the ERPs and of the mu desynchronization were greater in the contralateral than in the ipsilateral hemisphere prior to right hand stimulation. Similar ERP and EEG changes were not present when the visual cue indicated that stimulation would be delivered to the task partner or to neither person. The absence of social influences during anticipation of tactile stimulation, and the relationship between the two brain signatures of anticipatory attention (CNV and mu rhythm) are discussed.
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影响因子：
3.5
作者：
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通讯作者：
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