Center for Neuropsychiatric Research of Traumatic Stress, Department of Psychiatry & UHSL, 1st Faculty of Medicine, Charles University, Prague, Czech Republic.
Brain Cogn. 2011 Mar;75(2):188-95. doi: 10.1016/j.bandc.2010.11.014. Epub 2010 Dec 9.
Recent findings indicate that neural mechanisms of consciousness are related to integration of distributed neural assemblies. This neural integration is particularly vulnerable to past stressful experiences that can lead to disintegration and dissociation of consciousness. These findings suggest that dissociation could be described as a level of neural disintegration reflecting a number of independent processes by means of neural complexity. In the present study measurement of dissociation, traumatic stress symptoms and neural complexity calculated using nonlinear analysis of EEG [during rest conditions], and electrodermal activity (EDA) [during rest and Stroop task] were performed in 52 university students (mean age 24.1). Neural complexity has been described using pointwise correlation dimension (PD2) calculated from EEG and EDA records. While no significant relationship was found between EEG complexity and dissociative symptoms, statistically significant relationship between EDA complexity and dissociative symptoms during rest, but not during the Stroop task, has been found. These results indicate that electrodermal complexity during rest may reflect a level of dissociative symptoms.
最近的研究结果表明，意识的神经机制与分布式神经集合体的整合有关。这种神经整合特别容易受到过去的压力经历的影响，这些经历可能导致意识的解体和分离。这些发现表明，分离可以被描述为一种神经解体的水平，反映了通过神经复杂性的多个独立过程。在本研究中，使用 EEG（在休息条件下）和皮肤电活动（在休息和 Stroop 任务期间）的非线性分析来测量分离、创伤后应激症状和神经复杂性，研究对象为 52 名大学生（平均年龄 24.1 岁）。使用从 EEG 和 EDA 记录中计算出的逐点关联维数（PD2）来描述神经复杂性。虽然 EEG 复杂性与分离症状之间没有显著关系，但在休息期间 EDA 复杂性与分离症状之间存在显著关系，而在 Stroop 任务期间则没有。这些结果表明，休息期间的皮肤电复杂性可能反映了分离症状的水平。
