Department of Psychology, Education & Child Studies, Erasmus School of Social and Behavioural Sciences, Erasmus University Rotterdam, Rotterdam, the Netherlands; Department of Clinical Psychology, Faculty of Social and Behavioural Sciences, Utrecht University, Utrecht, the Netherlands.
Department of Clinical Psychology, Faculty of Social and Behavioural Sciences, Utrecht University, Utrecht, the Netherlands.
Behav Res Ther. 2019 Sep;120:103448. doi: 10.1016/j.brat.2019.103448. Epub 2019 Jul 28.
Patients with post-traumatic stress disorder frequently and involuntarily experience intrusions, which are strongly linked to the trauma hotspot. Voluntary memory characteristics (i.e., vividness and unpleasantness) of this hotspot can be reduced by performing a dual-task, such as making horizontal eye movements, which is frequently used in Eye Movement Desensitization and Reprocessing. We tested whether such dual-task interventions would also reduce involuntary memory (i.e., intrusions). Moreover, we examined if changes in hotspot vividness and unpleasantness predicted intrusion frequency. Additionally, we examined whether the effects were dependent on dual-task modality. We tested this in three experiments. Participants watched a trauma film and performed one of the interventions 10-min post-film (1) Recall + Eye movements, (2) Recall + Counting, or (3) No-Task Control. Before and after the intervention, participants rated the hotspot vividness and unpleasantness. They recorded intrusive memories about the film in a diary for a week. Unexpectedly, we found that hotspot vividness and unpleasantness ratings were not affected by the intervention. However, the prolonged (experiment 2), but not standard (experiment 1), dual-task interventions resulted in a lower number of intrusions, regardless of modality. However, this effect was not replicated in experiment 3. We discuss potential explanations and present suggestions for future research.
创伤后应激障碍患者经常不由自主地经历闯入，这与创伤热点密切相关。通过执行双重任务（例如水平眼球运动）可以降低该热点的自愿记忆特征（即生动性和不愉快性），这在眼动脱敏与再处理中经常使用。我们测试了这种双重任务干预是否也会减少无意识记忆（即闯入）。此外，我们还检查了热点生动性和不愉快性的变化是否预测了闯入的频率。此外，我们还检查了这些效果是否取决于双重任务模式。我们在三个实验中进行了测试。参与者观看了一部创伤电影，并在电影结束后 10 分钟内进行以下干预之一：（1）回忆+眼球运动，（2）回忆+计数，或（3）无任务对照。在干预前后，参与者对热点的生动性和不愉快性进行了评分。他们在一周内的日记中记录了有关电影的侵入性记忆。出乎意料的是，我们发现干预并未影响热点的生动性和不愉快性评分。然而，延长（实验 2）而非标准（实验 1）的双重任务干预导致侵入次数减少，而与模式无关。但是，在实验 3 中未复制此效果。我们讨论了潜在的解释，并提出了未来研究的建议。
