在过去的几年里,不同的研究提供了初步证据,表明无序依恋(DA)可能对自主神经唤醒调节和大脑连通性都具有失调和崩解作用。然而,尽管这种结构具有临床相关性,很少有研究使用脑电图(EEG)研究DA的特定改变。因此,本研究的主要目的是调查成人依恋访谈(AAI)给药前(前)和后(后)非临床样本(N=50)中DA的EEG微状态参数.在AAI之前和之后进行两次EEG闭眼静息状态(RS)记录,用于对参与者进行分类[即,无序/未解决(D/U)或有组织/已解决(O/R)的个人]并触发附件系统。微观状态参数(即,平均持续时间,使用Cartool软件从每个记录中提取时间覆盖和发生)。脑电微观状态聚类分析揭示了6个不同的图(标记为A,B,C,D,E,F)在两组中(即,D/U和O/R个体),并且在这两种情况下(即,AAI前和AAI后)。在AAI前的情况下,与O/R个人相比,D/U参与者显示出较短的平均持续时间和时间覆盖图F;在AAI后条件下,在D/U个体中也观察到图E的平均持续时间显著降低。最后,在“内部”统计分析中(即,前AAIvs.AAI后),AAI后,只有D/U组的F图时间覆盖率显着增加。由于这些地图与参与情绪信息处理和心理化的大脑网络(即,显着性网络和默认模式网络),我们的结果可能反映了在D/U心理状态的个体中观察到的照顾者的互动意识能力不足以及对依恋相关刺激的敏感性增加.
Over the past years, different studies provided preliminary evidence that Disorganized Attachment (DA) may have dysregulatory and disintegrative effects on both autonomic arousal regulation and brain connectivity. However, despite the clinical relevance of this construct, few studies have investigated the specific alterations underlying DA using electroencephalography (EEG). Thus, the main aim of the current study was to investigate EEG microstate parameters of DA in a non-clinical sample (N = 50) before (pre) and after (post) the administration of the Adult Attachment Interview (AAI). Two EEG eyes-closed Resting State (RS) recordings were performed before and after the AAI, which was used for classifying the participants [i.e., Disorganized/Unresolved (D/U) or Organized/Resolved (O/R) individuals] and to trigger the attachment system. Microstates parameters (i.e., Mean Duration, Time Coverage and Occurrence) were extracted from each recording using Cartool software. EEG microstates clustering analysis revealed 6 different maps (labeled A, B, C, D, E, F) in both groups (i.e., D/U and O/R individuals) and in both conditions (i.e., pre-AAI and post-AAI). In the pre-AAI condition, compared to O/R individuals, D/U participants showed a shorter Mean Duration and Time Coverage of Map F; in the post-AAI condition, a significant reduction in the Mean Duration of Map E was also observed in D/U individuals. Finally, in the \"within\" statistical analysis (i.e., pre-AAI vs. post-AAI), only the D/U group exhibited a significant increase in Time Coverage of Map F after the AAI. Since these maps are associated with brain networks involved in emotional information processing and mentalization (i.e., Salience Network and Default Mode Network), our result might reflect the deficit in the ability to mentalize caregiver\'s interaction as well as the increased sensitivity to attachment-related stimuli typically observed in individuals with a D/U state of mind.