Temporal dynamics of neural activity in motor execution and inhibition processing
Temporal dynamics of neural activity in motor execution and inhibition processing
复制标题
运动执行和抑制处理中神经活动的时间动态
DOI：
10.1016/j.neulet.2015.03.055
复制
发表时间：
2015
影响因子：
2.5
通讯作者：
Kakigi R
中科院分区：
文献类型：
--
作者：
Nakata H;Sakamoto K;Kakigi R
研究了任务重复对躯体感觉“去”/“不去”范式中事件相关电位（ERPs） N140和P300分量的影响。以相同的概率分别向左手的第二个或第五个手指展示“下围棋”或“不下围棋”刺激，受试者必须在展示“下围棋”刺激后尽快用右手拇指按下按钮。实验条件包括七次录音，每次录音后受试者可以放松五分钟。行为数据的反应时间（RT）， RT的标准偏差和错误率显示不受任务重复的影响。在ERP波形中，N140和P300的振幅随任务重复而降低，P300的潜伏期因任务重复而延迟。任务重复对N140的峰值潜伏期无显著影响。在Go/No-go范式中，N140和P300的振幅和潜伏期值的变化反映了任务重复时反应执行和抑制加工的神经激活的变化。
We investigated the effects of task repetition on the N140 and P300 components of event-related potentials (ERPs) in somatosensory Go/No-go paradigms. A Go or No-go stimulus was presented to the second or fifth digit of the left hand, respectively, at the same probability, and subjects had to respond by pushing a button with their right thumb as quickly as possible only after the presentation of a Go stimulus. The condition comprised seven sessions of recordings, and subjects were allowed to relax for five minutes after one session. The behavioral data for the reaction time (RT), standard deviation of RT, and error rates showed the absence of an effect by task repetition. In ERP waveforms, the amplitudes of N140 and P300 decreased with task repetition, and the latency of P300 was delayed by task repetition. There was no significant effect of task repetition on the peak latency of N140.Changes in amplitude and latency values in N140 and P300 during Go/No-go paradigms reflected changes in the neural activation of response execution and inhibition processing with task repetition.