在分离性身份障碍中对自我相关信息的公开和秘密处理:受控的fMRI研究
Aikaterini I Strouza1,2, Andrew J Lawrence1, Lora I Dimitrova1,2
1Department of Psychological Medicine, https://ror.org/0220mzb33Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.
BJPsych open
|December 26, 2025
概括
患有分离性身份障碍 (DID) 的人表现出更慢的反应时间和增加的大脑激活,这表明他们会认知地避免与创伤相关的信息. 这项研究加强了DID经验的真实性.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 认知心理学 认知心理学
背景情况:
- 分离性身份障碍 (DID) 涉及不同的创伤回避和创伤相关的身份状态.
- 对创伤相关信息的有意识处理在DID中是身份状态依赖的.
- 之前对DID潜意识处理的研究缺乏创伤特异性刺激.
研究的目的:
- 调查神经和行为差异的公开和隐蔽的知识处理的个性化,自我相关的单词在DID.
- 使用fMRI比较患有DID的个体,DID模拟器和健康/PTSD对照.
主要方法:
- 一个受控的功能磁共振成像 (fMRI) 研究,涉及56名参与者 (14 DID, 14 模拟器, 14 健康对照, 14 PTSD).
- 患有DID和模拟器的参与者经历了创伤回避和创伤相关的身份状态.
- 行为数据 (反应时间) 和大脑激活被分析为公开和隐藏的词汇呈现.
主要成果:
- 观察到意识的显著主要效应 (P < 0.001).
- 与模拟和健康对照人群相比,患有DID的个体反应时间较慢 (P <0.05).
- 在DID组中,发现了额头和额头大脑激活的增加,特别是在公开处理过程中.
结论:
- 研究结果表明,在DID的创伤回避状态下,在公开的自我相关的知识处理过程中,认知控制增加.
- 缓慢的反应时间和DID中较高的前端对象激活支持对创伤相关信息的认知回避.
- 结果强化了DID体验的真实性,并突出了不同的神经相关性.
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