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首页> 外文期刊>International journal of psychophysiology: official journal of the International Organization of Psychophysiology >EEG correlates of spontaneous self-referential thoughts: A cross-cultural study
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EEG correlates of spontaneous self-referential thoughts: A cross-cultural study

机译：脑电图与自发自荐思想的关联：跨文化研究

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The default mode network (DMN) has been mostly investigated using positron emission tomography and functional magnetic resonance imaging (fMRI) and has received mixed support in electroencephalographic (EEG) studies. In this study, after sLORETA transformation of EEG data, we applied group spatial independent component analysis which is routinely used in fMRI research. In three large and diverse samples coming from two different cultures (Russian and Taiwanese), spontaneous EEG data and retrospective questionnaire measures of subject's state, thoughts, and feelings during the EEG registration were collected. Regression analyses showed that appearance of spontaneous self-referential thoughts was best predicted by enhanced alpha activity within the DMN. Diminished theta and delta activity in the superior frontal gyrus and enhanced beta activity in the postcentral gyrus added to the prediction. The enhanced alpha activity prevailed in the posterior DMN hub in Russian, but in the anterior DMN hub in Taiwanese participants. Possible cross-cultural differences in personality and attitudes underlying this difference are discussed.
机译：默认模式网络（DMN）大多使用正电子发射断层扫描和功能磁共振成像（fMRI）进行了研究，并且在脑电图（EEG）研究中得到了混合支持。在这项研究中，经过sLORETA的EEG数据转换后，我们应用了在fMRI研究中常规使用的组空间独立成分分析。在来自两种不同文化（俄语和台湾语）的三个大样本中，收集了自发性脑电数据和脑电图注册过程中对象状态，思想和情感的回顾性问卷调查。回归分析显示，通过DMN中增强的alpha活性可以最好地预测自发性自指思想的出现。上额额回中的θ和δ活性降低，而中央后回中的β活性增强，这增加了预测。增强的alpha活性在俄语中的DMN前枢纽中占优势，但在台湾参与者中在DMN前枢纽中占主导地位。讨论了可能存在的跨文化差异的人格和态度。

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