The transliminal brain at rest: baseline EEG, unusual experiences, and access to unconscious mental activity.
The transliminal brain at rest: baseline EEG, unusual experiences, and access to unconscious mental activity.
复制标题
DOI：
10.1016/j.cortex.2007.08.024
复制
发表时间：
2008-11
期刊：
影响因子：
3.6
通讯作者：
Kounios, John
中科院分区：
文献类型：
--
作者：
Fleck, Jessica I.;Green, Deborah L.;Stevenson, Jennifer L.;Payne, Lisa;Bowden, Edward M.;Jung-Beeman, Mark;Kounios, John
跨阈限反映了无意识过程或外部刺激进入意识的阈值的个体差异。跨阈值高的个体具有诸如神奇观念、对超自然现象的信仰和创造性人格特征等特征，并且还会报告躁狂/神秘体验的发生。本研究的目的是确定高跨阈性个体与低跨阈性个体的静息大脑活动是否存在差异。我们比较了跨阈值高和低的个体之间的基线脑电图记录（闭眼），并使用修订的跨阈值量表进行评估。识别高跨阈值个体和低跨阈阈值个体之间在休息时的可靠差异将支持跨阈值相关特征的倾向。跨阈值高的个体在左后联合皮质上表现出比跨阈值低的个体更低的α、β和γ功率，并且在右上颞区表现出更低的高α、低β和γ功率。相反，与跨阈值低的个体相比，跨阈值高的个体在额叶中线区域表现出更大的伽马功率。这些结果与先前的研究报告一致，即精神分裂症和相关精神分裂症谱系疾病中左颞叶/顶叶活动减少，以及右颞叶活动不同步。此外，高跨阈性群体和低跨阈性群体之间的差异扩展了现有的理论，即大脑活动的半球不对称性改变与精神分裂症、超自然信仰和不寻常经历的倾向有关。
Transliminality reflects individual differences in the threshold at which unconscious processes or external stimuli enter into consciousness. Individuals high in transliminality possess characteristics such as magical ideation, belief in the paranormal, and creative personality traits, and also report the occurrence of manic/mystic experiences. The goal of the present research was to determine if resting brain activity differs for individuals high versus low in transliminality. We compared baseline EEG recordings (eyes-closed) between individuals high versus low in transliminality, assessed using The Revised Transliminality Scale of. Identifying reliable differences at rest between high- and low-transliminality individuals would support a predisposition for transliminality-related traits. Individuals high in transliminality exhibited lower alpha, beta, and gamma power than individuals low in transliminality over left posterior association cortex and lower high alpha, low beta, and gamma power over the right superior temporal region. In contrast, when compared to individuals low in transliminality, individuals high in transliminality exhibited greater gamma power over the frontal-midline region. These results are consistent with prior research reporting reductions in left temporal/parietal activity, as well as the desynchronization of right temporal activity in schizotypy and related schizophrenia spectrum disorders. Further, differences between high- and low-transliminality groups extend existing theories linking altered hemispheric asymmetries in brain activity to a predisposition toward schizophrenia, paranormal beliefs, and unusual experiences.
登录
查看更多内容
影响因子：
17.7
作者：
Dickey, CC;McCarley, RW;Shenton, ME
通讯作者：
Shenton, ME
影响因子：
6.9
作者：
Goldberg, TE;Dodge, M;Weinberger, DR
通讯作者：
Weinberger, DR
影响因子：
64.8
作者：
Blanke, O;Ortigue, S;Seeck, M
通讯作者：
Seeck, M
影响因子：
7.6
作者：
Carson, SH;Peterson, JB;Higgins, DM
通讯作者：
Higgins, DM
影响因子：
4.3
作者：
Goulding, A
通讯作者：
Goulding, A