神经质和负面情绪情境对自发脑电图动态的综合影响。

Michele Deodato, Martin Seeber, Kevin Mammeri, Christoph M Michel, Patrik Vuilleumier
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引用次数: 0

摘要

神经质是一种与临床密切相关的人格特质,它被定义为倾向于体验负面情绪、持续自我产生负面想法以及情绪调节能力受损。在这里,我们研究了负面情绪事件发生后大脑的自发动态及其与神经质的联系,以揭示与情绪控制相关的大规模大脑网络的长期活动。我们记录了36名参与者的脑电图(EEG),要求他们在观看中性或恐惧视频片段后休息。四个地形图(即微状态 A、B、C 和 D 类)解释了自发脑电图的大部分差异。受试者在受到恐惧刺激后,微状态 D 的出现率较高,而微状态 C 的出现率较低,这表明以前与这些微状态相关的注意力和内省相关网络发生了变化。这些情绪效应对神经质程度低的参与者更为明显。此外,神经质得分与微状态 C 呈正相关,而与微状态 D 呈负相关,与之前的情绪刺激无关。我们的研究结果揭示了情绪环境对静息状态脑电图的独特影响,这与负面情绪对大脑的长期影响是一致的,并表明这可能与神经质有关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Combined effects of neuroticism and negative emotional context on spontaneous EEG dynamics.

Neuroticism is a personality trait with great clinical relevance, defined as a tendency to experience negative affect, sustained self-generated negative thoughts and impaired emotion regulation. Here, we investigated spontaneous brain dynamics in the aftermath of negative emotional events and their links with neuroticism in order to shed light on the prolonged activity of large-scale brain networks associated with the control of affect. We recorded electroencephalography (EEG) from 36 participants who were asked to rest after watching neutral or fearful video clips. Four topographic maps (i.e. microstates classes A, B, C and D) explained the majority of the variance in spontaneous EEG. Participants showed greater presence of microstate D and lesser presence of microstate C following exposure to fearful stimuli, pointing to changes in attention- and introspection-related networks previously associated with these microstates. These emotional effects were more pronounced for participants with low neuroticism. Moreover, neuroticism scores were positively correlated with microstate C and negatively correlated with microstate D, regardless of previous emotional stimulation. Our results reveal distinctive effects of emotional context on resting-state EEG, consistent with a prolonged impact of negative affect on the brain, and suggest a possible link with neuroticism.

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