COGNITIVE NEUROSCIENCE: Mismatch negativity (MMN) reveals sound grouping in the human brain
COGNITIVE NEUROSCIENCE: Mismatch negativity (MMN) reveals sound grouping in the human brain
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认知神经科学：失配负性（MMN）揭示了人脑中的声音分组
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通讯作者：
S. Kaneko
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作者：
N. Shinozaki;H. Yabe;Yasuharu Sato;T. Sutoh;T. Hiruma;T. Nashida;S. Kaneko
为了研究记忆痕迹结构的一部分，当阅读对象同时接受两种不同的刺激系列时，记录了他们的听觉事件相关电位（ERP）。当刺激序列由高频序列和低频序列组成时，每个序列都获得明显的失配负性（MMN）。此外，MMN 在每个系列中都显示出独立的启发。然而，如果一个系列的频率范围与另一系列的频率范围重叠，则MMN的幅度显着减小，这表明MMN索引的两种处理功能在前注意声学系统中同时共存，并且是由高频音调和低频音调各自分组产生的。 NeuroReport 11：1597±1601 & 2000 Lippincott Williams & Wilkins。
To investigate a part of the structure of the memory trace, auditory event-related potentials (ERPs) were recorded from reading subjects while they were presented with two different stimulus-series simultaneously. A clear mismatch negativity (MMN) was obtained from each series, when the stimulus sequence consisted of a high-frequency series and a lowfrequency series. Moreover, the MMN showed independent elicitation within each series. However, if the frequency range of one series overlapped with that of the other series, the amplitude of the MMN was prominently reduced, suggesting that the two processing functions indexed by MMN coexisted simultaneously in the preattentive acoustic system and were produced by the respective grouping of high-frequency tones and low-frequency tones. NeuroReport 11:1597±1601 & 2000 Lippincott Williams & Wilkins.