Stages of auditory feature conjunction: an event-related brain potential study.
Stages of auditory feature conjunction: an event-related brain potential study.
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DOI：
10.1037//0096-1523.20.1.81
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发表时间：
1994-02
期刊：
影响因子：
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通讯作者：
David L. Woods;K. Alho;A. P. Algazi
中科院分区：
文献类型：
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作者：
David L. Woods;K. Alho;A. P. Algazi
听觉事件相关脑电位（ERPs）被记录到不同的频率和位置的音调在一个两分选择性注意任务中，Ss的反应偶尔偏离音调的预先指定的位置和频率。注意效应被分离为负差（Nd）波减去ERP音调没有注意功能的ERP相同的音调时，他们共享的目标频率，位置，或两者兼而有之的线索。N1/P90（潜伏期80-100 ms），起源于一个tonotopically组织发电机，增强了所有的音调在出席的耳朵。Nd波，开始于80毫秒，持续长达700毫秒，被认为是音调与出席功能。Nd波的频率和位置特征具有不同的头皮分布，与不同皮质区的产生相一致。特定于连接的Nds在Nds到个体特征之后30-50 ms开始。相对时间表明，功能连接开始之前，分析个别功能完成。
Auditory event-related brain potentials (ERPs) were recorded to tones of different frequencies and locations in a dichotic selective attention task in which Ss responded to occasional deviant tones of a prespecified location and frequency. Attention effects were isolated as negative difference (Nd) waves by subtracting ERPs to tones with no attended features from ERPs to the same tones when they shared target frequency, location, or both cues. The N1/P90 (latency 80-100 ms), originating in a tonotopically organized generator, was enhanced for all tones in the attended ear. Nd waves, beginning at 80 ms and lasting up to 700 ms, were seen to tones with either attended feature. Nd waves to frequency and location features had different scalp distributions consistent with generation in different cortical fields. Conjunction-specific Nds began 30-50 ms after Nds to individual features. The relative timing suggests that feature conjunction began before the analysis of individual features was complete.