MISMATCH DETECTION AND THE LATENCY OF TEMPORAL JUDGMENTS
MISMATCH DETECTION AND THE LATENCY OF TEMPORAL JUDGMENTS
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DOI：
10.1111/j.1469-8986.1992.tb01713.x
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发表时间：
1992-07-01
期刊：
影响因子：
3.7
通讯作者：
VAUGHAN, HG
中科院分区：
文献类型：
--
作者：
NOVAK, G;RITTER, W;VAUGHAN, HG
事件相关电位记录在两个听觉任务涉及的双耳呈现的音调或持续时间的歧视。频繁出现的非目标音调，在一个简单的反应时间任务相比，相同的音调，引起了两个负峰，NA 1和NA 2，其次是一个积极的峰值，非目标积极。不常出现的目标音，与非目标相比，引起失配负波（MMN），其次是N2和P3 b。在音高和时程任务中，NA 1和NA 2的峰潜伏期没有差异，但在时程任务中，NA 1的时程、失配负波、N2和P3 b的峰潜伏期以及反应时平行增加。有人建议，NA 1-非目标的积极性序列反映了启动，维护和终止的注意力调节过程，这是需要的性能的听觉歧视，任务，和MMN-N2-P3 b序列反映了一个过程引起的不常见的目标，这是在这些测试条件下的反应时间的主要决定因素。
Event-related potentials were recorded in two auditory tasks involving the discrimination of pitch or duration of binaurally presented tones. Frequently-presented nontarget tones, when compared to the same tones in a simple reaction time task, elicited two negative peaks, NA1 and NA2, followed by a positive peak, nontarget positivity. Infrequently-presented target tones, when compared to the nontargets, elicited mismatch negativity (MMN), followed by N2 and P3b. The peak latencies of NA1 and NA2 did not differ between the pitch and duration tasks, but the duration of NA1 and the peak latencies of mismatch negativity, N2, and P3b, as well as reaction time, increased in parallel for the duration task. It is proposed that the NA1-nontarget positivity sequence reflects the initiation, maintenance, and termination of an attention-modulated process, which is required for the performance of an auditory discrimination,task, and that the MMN-N2-P3b sequence reflects a process elicited by infrequently-presented targets, which is the main determinant of reaction time under these testing conditions.