Electrophysiological correlates of anxious rumination
Electrophysiological correlates of anxious rumination
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DOI：
10.1016/j.ijpsycho.2008.09.004
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发表时间：
2009-02-01
影响因子：
3
通讯作者：
Corr, Philip Joseph
中科院分区：
文献类型：
--
作者：
Andersen, Soren Bo;Moore, Roger Anthony;Corr, Philip Joseph
EEG的连贯性和EEG功率响应被记录为63名参与者从事三个实验条件之一：“个人反刍”，“名义反刍”，和“基线计数”。反刍条件被中性（计数）任务分开，以消除神经遗留效应。对于个人沉思，参与者花了2分钟沉思他们生活中的一些事情，他们在两个头脑中（即，处于个人冲突状态）。对于名义反刍，他们提出了一个冲突的情况下（关于购买汽车），并指示反刍约2分钟。基线计数任务只是涉及计数前进从1在一个舒适的个人速度。参与者完成了各种问卷调查，以衡量情绪和性格特征（包括特质焦虑）。在以下波段分析EEG数据：4-6 Hz、6-8 Hz、8-10 Hz、10-12 Hz、12-20 Hz和20-30 Hz。结果显示，与个人反刍相关的头皮范围EEG θ（4-6 Hz和6-8 Hz）相干性显著大于与名义反刍和基线计数相关的一致性。同样，与个人反刍相关的头皮宽度6-8 Hz和顶枕4-6 Hz功率显著大于与标称反刍相关的功率和基线计数功率。对于α，与个人反刍相关的10-12 Hz头皮EEG相干性显著大于与基线计数相关的相干性。另外，与名义反刍和个人反刍相关的头皮范围10-12 Hz功率显著大于对基线计数的响应。对于20-30 Hz头皮范围的EEG功率，与基线计数条件相关的数据相比，响应名义反刍条件的数据显着增加。从问卷数据来看，紧张唤醒、愤怒/挫折、享乐基调和精力唤醒都受到反刍的影响。这在很大程度上符合预期。情绪状态受神经质和状态焦虑的影响。我们的EEG结果与Gray和McNaughton的[Gray，J.A.，McNaughton，N.，2000.焦虑的神经心理学：对隔-海马系统功能的调查。牛津大学出版社，牛津。在反刍中固有的目标冲突解决过程中，说明隔海马系统和新皮层之间的递归处理。后扣带回参与这一过程的证据也进行了讨论。对未来的研究，旨在进一步评估的作用，SHS和后扣带回的建议，进行了概述。在alpha中发现的效果与提高警惕有关，而在beta中发现的效果与任务的认知和情感方面有关。我们的结论是，这些数据提供了新的信息与焦虑反刍的心理状态的神经过程，因此，理解正常和病理性焦虑的影响。(C)2008 Elsevier B. V.保留所有权利。
EEG coherence and EEG power response were recorded as 63 participants engaged in one of three experimental conditions: 'personal rumination', 'nominal rumination', and 'baseline counting'. The rumination conditions were separated by a neutral (counting) task to eliminate neural carry-over effects. For personal rumination, participants spent 2 min ruminating about something in their life about which they were in two minds (i.e., in a state of personal conflict). For nominal rumination, they were presented with a conflict scenario (concerning buying a car) and instructed to ruminate about that for 2 min. The baseline counting task simply involved counting forwards from 1 at a speed comfortable to the individual. Participants completed various questionnaires to measure mood and also traits of personality (including trait anxiety). EEG data were analysed in the following wavebands: 4-6 Hz, 6-8 Hz, 8-10 Hz, 10-12 Hz, 12-20 Hz and 20-30 Hz. Results revealed that the scalp-wide EEG theta (4-6 Hz and 6-8 Hz) coherence associated with personal rumination was significantly greater than that associated with nominal rumination and baseline counting. Similarly, the scalp-wide 6-8 Hz and parietal-occipital 4-6 Hz power associated with personal rumination were significantly greater than power associated with the nominal rumination and power for baseline counting. For alpha, the 10-12 Hz scalp-wide EEG coherence associated with personal rumination was significantly greater than that associated with baseline counting. Otherwise, the scalp-wide 10-12 Hz power related to both nominal rumination and personal rumination were significantly greater than in response to baseline counting. For 20-30 Hz scalp-wide EEG power, data in response to the nominal rumination condition were significantly increased compared to data associated with the baseline counting condition. In terms of questionnaire data, tense arousal, anger/frustration, hedonic tone and energetic arousal were all influenced by rumination. This was largely in line with expectation. Also, mood state was influenced by neuroticism and state anxiety. Our EEG results are consistent with Gray and McNaughton's [Gray, J.A., McNaughton, N., 2000. The neuropsychology of Anxiety: An Anquiry into the Functions of the Septo-Hippocampal System. 2nd ed. Oxford University Press, Oxford.] account of recursive processing between the septo-hippocampal system and neocortex during goal-conflict resolution inherent in rumination. Evidence of posterior cingulate involvement in this processing was also discussed. Recommendations for future research, aimed at further evaluating the role of the SHS and the posterior cingulated, were outlined. Effects found in alpha were linked to increased vigilance whilst effects in beta were linked to cognitive and emotional aspects of the task. We conclude that these data provide new information of the neural processes associated with the psychological state of anxious rumination and, thus, hold implications for understanding normal and pathological anxiety. (C) 2008 Elsevier B.V. All rights reserved.