Näätänen R, Jiang D, Lavikainen J, Reinikainen K, Paavilainen P
Department of Psychology, University of Helsinki, Finland.
Neuroreport. 1993 Dec 13;5(3):310-2. doi: 10.1097/00001756-199312000-00033.
Auditory event-related potentials (ERPs) were recorded from reading subjects while they were presented with 50 ms tone pips intervened by regular silent intervals of 550 ms. This interval was occasionally shortened either to 250, 100, 25, 10, or 2 ms, which resulted in the elicitation of the mismatch-negativity (MMN), a change-specific ERP component not elicited by tones appearing after the regular, longer intervals. This indicates that the MMN is not just due to new afferent elements activated by deviant but not standard stimuli. In addition, the present results suggest that the temporal parameters of acoustic stimulation are also encoded in memory traces which therefore are representations of auditory events rather than only of static stimulus aspects.
在阅读受试者聆听时长为50毫秒的纯音短声，并间隔550毫秒的规则静音期时，记录其听觉事件相关电位（ERP）。此间隔偶尔会缩短至250、100、25、10或2毫秒，这会引发失匹配负波（MMN），这是一种特定于变化的ERP成分，规则的较长间隔后出现的音调不会引发该成分。这表明MMN不仅仅是由异常刺激而非标准刺激激活的新传入元素所致。此外，目前的结果表明，听觉刺激的时间参数也编码在记忆痕迹中，因此这些记忆痕迹是听觉事件的表征，而不仅仅是静态刺激方面的表征。
