Cognitive and Clinical Psychology Laboratory, Department of Human Sciences, European University of Rome, Rome, Italy.
Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy.
Psychopathology. 2022;55(1):28-36. doi: 10.1159/000519563. Epub 2021 Nov 17.
We investigated the association among triple network electroencephalographic (EEG) functional connectivity, dissociative symptoms, and childhood trauma (CT) in a sample of university students.
Seventy-six participants (30 males and 46 females; mean age 22.12 ± 2.35) completed self-report measures investigating dissociative symptoms, CT, and depressive symptoms. Participants also performed an eyes-closed resting-state EEG recording. EEG analyses were conducted through the exact low-resolution electromagnetic tomography (eLORETA) software.
A 2-step cluster analysis revealed 2 groups: participants (N = 23) with high dissociative-traumatic dimension symptoms (DTD+) and participants (N = 53) with low DTD symptoms (DTD-). Compared to DTD- subjects, DTD+ participants showed decreased theta connectivity between the salience network (SN) and central executive network (CEN), specifically between the right anterior insula and the left posterior parietal cortex. No significant correlation was detected between EEG data and clinical variables.
Our results raise the possibility of a dysfunctional connectivity pattern occurring between the SN and CEN in individuals with high DTD symptoms. Such connectivity pattern might reflect the neuropsychophysiological disintegration related to pathological dissociation.
我们调查了三重网络脑电图（EEG）功能连接、分离症状和大学生群体中心理创伤（CT）之间的关联。
76 名参与者（30 名男性和 46 名女性；平均年龄 22.12 ± 2.35 岁）完成了调查分离症状、CT 和抑郁症状的自我报告量表。参与者还进行了闭眼静息状态 EEG 记录。EEG 分析通过精确低分辨率电磁断层成像（eLORETA）软件进行。
2 步聚类分析显示有 2 组：高分离创伤维度症状组（N = 23，DTD+）和低 DTD 症状组（N = 53，DTD-）。与 DTD-组相比，DTD+组表现出显著降低的前岛叶和左后顶叶皮质之间的注意网络（SN）和中央执行网络（CEN）之间的θ连接。EEG 数据与临床变量之间未检测到显著相关性。
我们的结果表明，在高 DTD 症状个体中，SN 和 CEN 之间可能存在功能连接异常模式。这种连接模式可能反映了与病理性分离相关的神经心理生理解体。
