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首页> 外文期刊>Psychophysiology >N1 and the mismatch negativity are spatiotemporally distinct ERP components: Disruption of immediate memory by auditory distraction can be related to N1
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N1 and the mismatch negativity are spatiotemporally distinct ERP components: Disruption of immediate memory by auditory distraction can be related to N1

机译:N1和失配阴性是时空上不同的ERP组件:听觉干扰导致的即时记忆中断可能与N1相关

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摘要

Event-related potentials (ERPs) were recorded for ignored tones presented during the retention interval of a delayed serial recall task. The mismatch negativity (MMN) and N1 ERP components were measured to discern spatiotemporal and functional properties of their generation. A nine-token sequence with nine different tone pitches was more disruptive than an oddball (two-token) sequence, yet this oddball sequence was no more disruptive than a single repeating tone (one-token). Tones of the nine-token sequence elicited augmented N1 amplitudes compared to identical tones delivered in the one-token sequence, yet deviants elicited an additional component (MMN) with distinct temporal properties and topography. These results suggested that MMN and N1 are separate, functionally distinct components. Implications are discussed for the N1 hypothesis and the changing-state hypothesis of the disruption of serial recall performance by auditory distraction.
机译:记录了与事件相关的电位(ERP),用于在延迟串行召回任务的保留间隔期间呈现的忽略音调。测量失配负性(MMN)和N1 ERP组件以识别其生成的时空和功能特性。具有9个不同音高的9音序比单音(两个音)序列更具破坏性,但此奇音序不比单个重复音(单音)更具破坏性。与以单令牌序列传递的相同音调相比,具有九个令牌序列的音调会引起N1振幅的增加,但偏离者会产生具有不同的时间特性和地形的附加成分(MMN)。这些结果表明,MMN和N1是独立的,功能不同的组件。讨论了N1假设和听觉分心导致的系列召回表现中断的变化状态假设的含义。

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