Auditory event-related potentials to semantic priming during sleep
Auditory event-related potentials to semantic priming during sleep
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DOI：
10.1016/s0168-5597(97)00102-0
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发表时间：
1998-04-01
期刊：
影响因子：
--
通讯作者：
Valdizán, JR
中科院分区：
文献类型：
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作者：
Brualla, J;Romero, MF;Valdizán, JR
本研究使用事件相关电位（ERPs）的N400分量作为睡眠中单个口语单词的加工标记。13名健康志愿者参加了这项研究。在清醒状态、睡眠II、III-IV阶段和REM阶段，通过对单词（50%相关，50%不相关）组成的语义启动范式记录听觉erp，并将II阶段和REM阶段观察到的负性振幅、潜伏期和头皮分布参数与清醒状态下的结果进行对比。在这些睡眠阶段引发的“n400样”效应显示，对不相关单词的平均振幅显著大于对相关单词的平均振幅，并且潜伏期增加。这些结果表明，在这些睡眠阶段，语义启动效应保持活跃，尽管词汇加工时间增加。(C) 1998爱思唯尔科学爱尔兰有限公司
The present study uses the N400 component of event-related potentials (ERPs) as a processing marker of single spoken words presented during sleep. Thirteen healthy volunteers participated in the study. The auditory ERPs were registered in response to a semantic priming paradigm made up of pairs of words (50% related, 50% unrelated) presented in the waking state and during sleep stages II, III-IV and REM. The amplitude, latency and scalp distribution parameters of the negativity observed during stage II and the REM stage were contrasted with the results obtained in the waking state. The 'N400-like' effect elicited in these stages of sleep showed a mean amplitude for pairs of unrelated words significantly greater than for related pairs and an increment of latency. These results suggest that during these sleep stages a semantic priming effect is maintained actively although the lexical processing time increases. (C) 1998 Elsevier Science Ireland Ltd.