Neurophysiological and behavioral indices of time pressure effects on visuomotor task performance
Neurophysiological and behavioral indices of time pressure effects on visuomotor task performance
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DOI：
10.1016/s0926-6410(00)00009-4
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发表时间：
2000-06-01
期刊：
影响因子：
--
通讯作者：
Ray, W
中科院分区：
文献类型：
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作者：
Slobounov, SM;Fukada, K;Ray, W
本研究采用电子游戏的形式，探讨了时间压力（TP）对行为和皮层电指标的影响。行为的结果是一致的，与以前的时间压力的研究，TP减少时间来执行任务，增加行为错误。此外，脑电图（EEG）测量结果显示，沿中线沿着的θ、μ和γ带中存在与TP相关的独特模式。在Fz处的中线θ、Fz处的γ和Cz处的μ中也观察到成功与失败试验中的部位特异性变化。右顶叶α也区分TP和成功与失败试验。在特定的TP（1）增加额叶中线θ活动和（2）增加γ。中线（额叶、中央和部分）和右额叶区域。这些发现的结果进行了讨论，在特定的神经认知策略的形成所证明的地形分布的任务相关的调制的EEG在某些频带内。这表明，TP对视觉性能的影响是通过采用任务相关或任务无关的神经认知策略，如成功或失败的试验证明，分别介导。这些策略是在执行之前制定的，还是在任务执行过程中自发出现的，目前尚不清楚，有待进一步的实验。(C)2000 Elsevier Science B.V.保留所有权利。
Using a video game format, this study examined the effects of time pressure (TP) on behavioral and electrocortical indices. The behavioral results were consistent with previous time pressure research in that TP reduced time to perform a task and increases behavioral errors. In addition, electroencephalogram (EEG) measures showed distinctive patterns associated with TP in the theta, mu, and gamma bands along the midline, Site specific changes in the success vs. failure trials were also seen in midline theta at Fz, gamma at Fz, and mu at Cz. Right parietal alpha also differentiated TP and success vs. failure trials. In specific TP (1) increased frontal midline theta activity and (2) increased gamma at. midline (frontal, central, and partietal) and in right frontal areas. The results of these findings are discussed in terms of the formation of specific neurocognitive strategies as evidenced by the topographic distribution of task-related modulation of the EEG within certain frequency bands. It is suggested that the effect of TP on visuomotor performance is mediated by adopting either task-relevant or task-irrelevant neurocognitive strategies as evidenced by successful or failed trials, respectively. Whether these strategies are formulated prior to performance or appear spontaneously during task performance remains unclear and is awaiting further experimentation. (C) 2000 Elsevier Science B.V. All rights reserved.