Preferential processing of emotionally and self-relevant stimuli persists in unconscious N2 sleep
Preferential processing of emotionally and self-relevant stimuli persists in unconscious N2 sleep
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DOI：
10.1016/j.bandl.2016.02.004
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发表时间：
2017-04-01
影响因子：
2.5
通讯作者：
Schabus, Manuel
中科院分区：
文献类型：
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作者：
Blume, Christine;del Giudice, Renata;Schabus, Manuel
信息处理被认为取决于大脑的当前状态以及刺激特征（例如显著性）。我们比较了处理的显着刺激（受试者自己的名字[SONS]和愤怒的声音[AV]刺激）处理的不熟悉的名字（UN）和中性的声音（NV）刺激在不同的警觉阶段（即清醒以及睡眠阶段N1和N2）通过事件相关的振荡反应在清醒和随后的午睡。我们的研究结果表明，情绪韵律和自我相关提请更多的注意资源，在清醒状态下，特别是AV刺激被处理得更强烈。在NI期间，无论韵律如何，SON都比UN更令人兴奋。此外，在N2睡眠期间，情绪和自我相关的刺激也引起了更强烈的反应，这表明在这种自然发生的无意识状态下大脑的“哨兵处理模式”。最后，在N2睡眠期间，这种对显著刺激的初始优先处理似乎随后是抑制性睡眠保护过程，这反映在K复合物样反应中。(C)2016年6月，作者。爱思唯尔公司出版这是CC BY-NC-ND许可下的开放获取文章。
Information processing has been suggested to depend on the current state of the brain as well as stimulus characteristics (e.g. salience). We compared processing of salient stimuli (subject's own names [SONS] and angry voice [AV] stimuli) to processing of unfamiliar names (UNs) and neutral voice (NV) stimuli across different vigilance stages (i.e. wakefulness as well as sleep stages N1 and N2) by means of event-related oscillatory responses during wakefulness and a subsequent afternoon nap. Our findings suggest that emotional prosody and self-relevance drew more attentional resources during wakefulness with specifically AV stimuli being processed more strongly. During NI, SONs were more arousing than UNs irrespective of prosody. Moreover, emotional and self-relevant stimuli evoked stronger responses also during N2 sleep suggesting a 'sentinel processing mode' of the brain during this state of naturally occurring unconsciousness. Finally, this initial preferential processing of salient stimuli during N2 sleep seems to be followed by an inhibitory sleep-protecting process, which is reflected by a K-complex-like response. (C) 2016 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license.