ENDOGENOUS BRAIN POTENTIALS ASSOCIATED WITH SELECTIVE AUDITORY ATTENTION
ENDOGENOUS BRAIN POTENTIALS ASSOCIATED WITH SELECTIVE AUDITORY ATTENTION
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DOI：
10.1016/0013-4694(80)90222-9
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发表时间：
1980-01-01
期刊：
影响因子：
--
通讯作者：
HILLYARD, SA
中科院分区：
文献类型：
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作者：
HANSEN, JC;HILLYARD, SA
在一项选择性注意实验中，记录了12名受试者的事件相关电位(ERP)，这些受试者听了高频和低频音调序列，这些序列以随机的顺序以快速的速度呈现。他们的任务是选择性地注意高频或低频音调，并在检测到适当频率的偶尔较长持续时间的音调时按下按钮。注意的效应表现在不同的波形上，当它们被注意时，从ERP对相同刺激的不同刺激中减去ERP，得到的注意效果是不同的。差异波由一个宽广的多相负成分(ND)组成，其晚期(300-400ms)比早期(100-300ms)或在阅读条件下诱发的N1成分更多地分布在头皮上。ND的起效幅度和潜伏期随音调之间的频率间隔而有系统地变化。选择性听觉注意对N1成分(约100ms潜伏期)的影响不仅仅是由于顶点电位的外源性N1成分的放大，而是包括增加了一个延长的内源性成分。因此，一种简单的用于人类选择性注意的格栅机制被拒绝了。
In a selective attention experiment, event-related potentials (ERP) were recorded from 12 human subjects who listened to sequences of high and low frequency tone pips, presented binaurally in random order at a rapid rate. Their task was to attend selectively to either the high or low frequency tones and to press a button upon detection of occasional longer-duration tones at the appropriate frequency. The effect of attention was manifest in difference wave forms obtained by subtracting ERP to the shorter tones when they were unattended from the ERP to the same stimuli when they were attended. The difference waves consisted of a broad, multiphasic negative component (Nd) with its later phase (300-400 ms) being more frontally distributed on the scalp than either its early phase (100-300 ms) or the N1 component that was evoked in a reading condition. The amplitude and latency of onset of Nd varied systematically as a function of the frequency separation between the tones. The effect of selective auditory attention on the N1 component (ca. 100 ms latency) is not due solely to an enlargement of the exogenous N1 component of the vertex potential, but rather includes the addition of a prolonged endogenous component. A simple grating mechanism for human selective attention was thus rejected.