Visual search for biological motion: An event-related potential study
Visual search for biological motion: An event-related potential study
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DOI：
10.1016/j.neulet.2006.05.002
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发表时间：
2006-08-07
影响因子：
2.5
通讯作者：
Hiraki, Kazuo
中科院分区：
文献类型：
--
作者：
Hirai, Masahiro;Hiraki, Kazuo
为了研究周围有干扰物的生物运动（BM）检测的神经反应，记录事件相关电位（ERPs）。与BM相同的速度矢量，但随机初始起始点的杂乱运动被用作牵引器。干扰物的数量是变化的，以控制任务的难度。行为学数据显示，反应时随干扰物数量的增加而增加。此外，ERP结果表明，增强的负性引起的后电极对侧的位置的BM与传统的N2pc样成分，这是有关的目标的选择。反应时的增加表明注意过程参与了BM的检测。此外，ERP波形表明，即使当目标的检测需要从运动的形式处理，类似的神经机制，参与传统的视觉搜索任务在这里。(c)2006爱思唯尔爱尔兰有限公司保留所有权利。
To investigate the neural response to detection of biological motion (BM) surrounded by distractors, event-related potentials (ERPs) were recorded. Scrambled motion with the same velocity vector as the BM but randomized initial starting points was used as the distractor. The number of distractors was varied to control the difficulty of the task. The behavioral data showed that the reaction time increased with the number of distractors. Moreover, the ERP results showed that enhanced negativity was elicited at posterior electrodes contralateral to the location of the BM as with the conventional N2pc-like component, which is related to selection of the target. The increment of reaction time indicated that the attentional process is involved in the detection of BM. Furthermore, the ERP waveforms suggest that, even when detection of the target requires form-from-motion processing, similar neural mechanisms to those involved in conventional visual search tasks were employed here. (c) 2006 Elsevier Ireland Ltd. All rights reserved.