Enhanced response inhibition in experienced fencers.
Enhanced response inhibition in experienced fencers.
复制标题
经验丰富的击剑运动员的反应抑制增强
DOI：
10.1038/srep16282
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发表时间：
2015-11-06
影响因子：
4.6
通讯作者：
Luo Y
中科院分区：
文献类型：
--
作者：
Zhang D;Ding H;Wang X;Qi C;Luo Y
对优势反应的抑制是一种基本的执行功能，它使我们能够在给定的环境中抑制不适当的行为。具有击剑专业知识的个体在对反应抑制有高要求的任务上表现出行为优势。本研究探讨了击剑运动员上级反应抑制的电生理基础。在去/Nogo任务，频繁的刺激需要一个运动反应，而反应被扣留到罕见的刺激，击剑运动员，与非击剑运动员相比，表现出行为以及电生理优势时，抑制优势反应。击剑运动员中的上级反应抑制的特征在于增强的Nogo-N2和减少的Nogo-P3。单次试验分析表明，两组之间的Nogo-N2的幅度差异是由击剑运动员较低的单次试验潜伏期变异性引起的（可能是由于低注意波动和/或稳定的神经处理速度），而Nogo-P3的幅度差异是由击剑运动员真正较弱的神经活动引起的（可能是因为几乎不需要认知来源和控制努力）。这两个抑制相关成分是两个不同的神经生理指标，一方面可以有效地指导击剑运动员的执行功能水平，另一方面也有利于监测击剑运动员在训练过程中的进步。
The inhibition of a prepotent response is an essential executive function which enables us to suppress inappropriate actions in a given context. Individuals with fencing expertise exhibit behavioral advantages on tasks with high demands on response inhibition. This study examines the electrophysiological basis for the superior response inhibition in experienced fencers. In the Go/Nogo task where frequent stimuli required a motor response while reaction had to be withheld to rare stimuli, the fencers, compared with the non-fencers, exhibited behavioral as well as electrophysiological advantages when suppressing prepotent responses. The superior response inhibition in the fencers was characterized by enhanced Nogo-N2 and reduced Nogo-P3. Single-trial analysis revealed that the amplitude difference of the Nogo-N2 between two groups was caused by lower single-trial latency variability in the fencers (may be due to low attentional fluctuation and/or stable neural processing speed) while the amplitude difference of the Nogo-P3 resulted from truly weaker neural activity in the fencers (may be because few cognitive sources are needed and few control efforts are made). The two inhibition-related components are distinct neurophysiological indexes that, on the one hand, provide effective guidance to titrate the level of executive function in fencers and on the other hand, facilitate to monitor fencers’ improvement in the training process.