Reducing unwanted trauma memories by imaginal exposure or autobiographical memory elaboration: An analogue study of memory processes
Reducing unwanted trauma memories by imaginal exposure or autobiographical memory elaboration: An analogue study of memory processes
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DOI：
10.1016/j.jbtep.2010.12.009
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发表时间：
2012-12-01
影响因子：
1.8
通讯作者：
Handley, Rachel
中科院分区：
文献类型：
--
作者：
Ehlers, Anke;Mauchnik, Jana;Handley, Rachel
对创伤事件的不想要的记忆是创伤后应激障碍的核心症状。一系列干预措施，包括想象暴露和在自传背景中详细阐述创伤记忆，可以有效减少此类不想要的记忆。这项研究探讨了在创伤和评价性调节的背景下发生的刺激的启动是否可能在这些手术的治疗效果中发挥作用。健康志愿者（N = 122）观看模拟创伤性和中性图片故事。然后，他们被随机分配到 20 分钟的想象暴露、自传体记忆阐述或旨在防止进一步处理图画故事的控制条件。模糊图片识别任务表明，故事中创伤图片之前的中性物体比中性故事之前的中性物体更容易被识别，这表明启动增强。还有一种评价性调节效应，参与者更不喜欢创伤性图片之前出现的中性物体。自传体记忆的阐述减少了增强的启动效应。两种干预措施都降低了评价性调节效应。想象的暴露和自传体记忆的阐述都减少了随后对图画故事的不需要的记忆的频率。 (C) 2010 Elsevier Ltd. 保留所有权利。
Unwanted memories of traumatic events are a core symptom of post-traumatic stress disorder. A range of interventions including imaginal exposure and elaboration of the trauma memory in its autobiographical context are effective in reducing such unwanted memories. This study explored whether priming for stimuli that occur in the context of trauma and evaluative conditioning may play a role in the therapeutic effects of these procedures. Healthy volunteers (N = 122) watched analogue traumatic and neutral picture stories. They were then randomly allocated to 20 min of either imaginal exposure, autobiographical memory elaboration, or a control condition designed to prevent further processing of the picture stories. A blurred picture identification task showed that neutral objects that preceded traumatic pictures in the stories were subsequently more readily identified than those that had preceded neutral stories, indicating enhanced priming. There was also an evaluative conditioning effect in that participants disliked neutral objects that had preceded traumatic pictures more. Autobiographical memory elaboration reduced the enhanced priming effect. Both interventions reduced the evaluative conditioning effect. Imaginal exposure and autobiographical memory elaboration both reduced the frequency of subsequent unwanted memories of the picture stories. (C) 2010 Elsevier Ltd. All rights reserved.