The effect of hypnotically induced somatoform dissociation on the development of intrusions after an aversive film

Peritraumatic dissociation is thought to effect trauma information encoding, leading to PTSD symptoms like intrusive memories. Most studies have focused on peritraumatic psychological dissociation. The present experiment studied the impact of hypnotically induced somatoform dissociation (dissociativ...

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Main Authors: Hagenaars, M, van Minnen, A, Holmes, E, Brewin, C, Hoogduin, K
Format: Journal article
Language:English
Published: 2008
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author Hagenaars, M
van Minnen, A
Holmes, E
Brewin, C
Hoogduin, K
author_facet Hagenaars, M
van Minnen, A
Holmes, E
Brewin, C
Hoogduin, K
author_sort Hagenaars, M
collection OXFORD
description Peritraumatic dissociation is thought to effect trauma information encoding, leading to PTSD symptoms like intrusive memories. Most studies have focused on peritraumatic psychological dissociation. The present experiment studied the impact of hypnotically induced somatoform dissociation (dissociative non-movement) versus deliberate non-movement during an aversive film on intrusion development. Seventy-nine participants were randomised into three conditions: dissociative non-movement (catalepsy), deliberate non-movement, and non-restricted control. Participants recorded their intrusions of the film in a diary for one week. In the dissociative non-movement condition, catalepsy effectively provoked somatoform dissociation. Spontaneous somatoform dissociation across conditions was positively related to implicit bias to film-related words and negatively related to explicit recall, but was not related to intrusion frequency. Dissociative non-movement and deliberate non-movement conditions combined had more intrusions than controls. However, the dissociative non-movement group did not have more intrusions than deliberate non-movement and control groups combined. The implications of these findings are discussed.
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spelling oxford-uuid:6bea478c-c78b-46d5-943c-27cc47dd85602022-03-26T19:07:20ZThe effect of hypnotically induced somatoform dissociation on the development of intrusions after an aversive filmJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6bea478c-c78b-46d5-943c-27cc47dd8560EnglishSymplectic Elements at Oxford2008Hagenaars, Mvan Minnen, AHolmes, EBrewin, CHoogduin, KPeritraumatic dissociation is thought to effect trauma information encoding, leading to PTSD symptoms like intrusive memories. Most studies have focused on peritraumatic psychological dissociation. The present experiment studied the impact of hypnotically induced somatoform dissociation (dissociative non-movement) versus deliberate non-movement during an aversive film on intrusion development. Seventy-nine participants were randomised into three conditions: dissociative non-movement (catalepsy), deliberate non-movement, and non-restricted control. Participants recorded their intrusions of the film in a diary for one week. In the dissociative non-movement condition, catalepsy effectively provoked somatoform dissociation. Spontaneous somatoform dissociation across conditions was positively related to implicit bias to film-related words and negatively related to explicit recall, but was not related to intrusion frequency. Dissociative non-movement and deliberate non-movement conditions combined had more intrusions than controls. However, the dissociative non-movement group did not have more intrusions than deliberate non-movement and control groups combined. The implications of these findings are discussed.
spellingShingle Hagenaars, M
van Minnen, A
Holmes, E
Brewin, C
Hoogduin, K
The effect of hypnotically induced somatoform dissociation on the development of intrusions after an aversive film
title The effect of hypnotically induced somatoform dissociation on the development of intrusions after an aversive film
title_full The effect of hypnotically induced somatoform dissociation on the development of intrusions after an aversive film
title_fullStr The effect of hypnotically induced somatoform dissociation on the development of intrusions after an aversive film
title_full_unstemmed The effect of hypnotically induced somatoform dissociation on the development of intrusions after an aversive film
title_short The effect of hypnotically induced somatoform dissociation on the development of intrusions after an aversive film
title_sort effect of hypnotically induced somatoform dissociation on the development of intrusions after an aversive film
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