Electrical responses reveal the temporal dynamics of brain events during involuntary attention switching
Electrical responses reveal the temporal dynamics of brain events during involuntary attention switching
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DOI：
10.1046/j.0953-816x.2001.01707.x
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发表时间：
2001-09-01
影响因子：
3.4
通讯作者：
Alho, K
中科院分区：
文献类型：
--
作者：
Escera, C;Yago, E;Alho, K
在自然环境中生存需要在潜在的相关刺激之间快速切换注意力。我们在电生理学上研究了人类在执行一项旨在研究非自愿注意和分心的大脑机制的任务时的非自愿转换时间（C。Escera等人，1998，J. Cogn.神经科学，10，590-604）。10名受试者被指示区分与任务无关的声音之前的视觉刺激，这是一个重复的音调（P=0.8）或分散注意力的声音，即稍高的偏离音调（P=0.1）或环境的新声音（P=0.11）。在不同条件下，声音先于视觉刺激245或355 ms，异声和新奇声使视觉刺激反应时延长7.4（P
Surviving in the natural environment requires the rapid switching of attention among potentially relevant stimuli. We studied electrophysiologically the involuntary switching time in humans performing a task designed to study brain mechanisms of involuntary attention and distraction (C. Escera et al., 1998, J. Cogn. Neurosci., 10, 590-604). Ten subjects were instructed to discriminate visual stimuli preceded by a task-irrelevant sound, this being either a repetitive tone (P=0.8) or a distracting sound, i.e. a slightly higher deviant tone (P=0.1) or an environmental novel sound (P=0.11). In different conditions, the sounds preceded the visual stimuli by 245 or 355 ms. Deviant tones and novel sounds prolonged reaction times significantly to subsequent visual stimuli by 7.4 (P