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首页> 外文期刊>Psychiatry Research. Neuroimaging >Egocentric virtual maze learning in adult survivors of childhood abuse with dissociative disorders: Evidence from functional magnetic resonance imaging
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Egocentric virtual maze learning in adult survivors of childhood abuse with dissociative disorders: Evidence from functional magnetic resonance imaging

机译：以儿童为中心的虚拟迷宫学习在成年儿童虐待与分离障碍的成年幸存者中的作用：来自功能磁共振成像的证据

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摘要

Present neuroimaging findings suggest two subtypes of trauma response, one characterized predominantly by hyperarousal and intrusions, and the other primarily by dissociative symptoms. The neural underpinnings of these two subtypes need to be better defined. Fourteen women with childhood abuse and the current diagnosis of dissociative amnesia or dissociative identity disorder but without posttraumatic stress disorder (PTSD) and 14 matched healthy comparison subjects underwent functional magnetic resonance imaging (fMRI) while finding their way in a virtual maze. The virtual maze presented a first-person view (egocentric), lacked any topographical landmarks and could be learned only by using egocentric navigation strategies. Participants with dissociative disorders (DD) were not impaired in learning the virtual maze when compared with controls, and showed a similar, although weaker, pattern of activity changes during egocentric learning when compared with controls. Stronger dissociative disorder severity of participants with DD was related to better virtual maze performance, and to stronger activity increase within the cingulate gyrus and the precuneus. Our results add to the present knowledge of preserved attentional and visuospatial mnemonic functioning in individuals with DD.
机译：目前的神经影像学发现提示了创伤反应的两种亚型，一种主要表现为过度刺激和侵入，另一种主要表现为分离症状。这两个亚型的神经基础需要更好地定义。十四名患有儿童期虐待并且目前诊断为解离性健忘症或解离性身份障碍但没有创伤后应激障碍（PTSD）的妇女和14名匹配的健康对照受试者在虚拟迷宫中寻找自己的方式时接受了功能磁共振成像（fMRI）。虚拟迷宫呈现出第一人称视角（以自我为中心），没有任何地形地标，只能通过使用以自我为中心的导航策略来学习。与对照组相比，具有解离性障碍（DD）的参与者在学习虚拟迷宫时不会受到损害，并且与对照组相比，在以自我为中心的学习过程中，他们表现出相似但较弱的活动模式变化。 DD参加者的解离性障碍严重程度越高，与虚拟迷宫的性能越好，以及扣带回和前足内的活动增强越强相关。我们的结果增加了对DD患者保持注意力和视觉空间记忆功能的最新认识。

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