Cardiovascular and psychological responses to voluntary recall of trauma in posttraumatic stress disorder

Autor: Chia-Ying Chou, Roberto La Marca, Andrew Steptoe, Chris R. Brewin
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: European Journal of Psychotraumatology, Vol 9, Iss 1 (2018)
Druh dokumentu: article
ISSN: 2000-8066
20008198
DOI: 10.1080/20008198.2018.1472988
Popis: Voluntary recall of trauma is a key element in exposure-based psychotherapies and can trigger spontaneous dissociative responses such as flashbacks, depersonalisation, and derealisation. In order to examine the associations between cardiovascular and psychological responses to voluntary recollection of trauma, individuals with PTSD recalled a traumatic memory. Heart rate and heart rate variability were recorded continuously and the episodes when different forms of dissociation were experienced during the recall were identified. A significant increase in parasympathetic activity was found during trauma recall, with greater parasympathetic dominance being indicative of greater state depersonalisation/derealisation. Whereas overall decreases in heart rate during trauma recall were associated with increased fear and perceived threat, flashbacks were accompanied by short-term increases in heart rate. These findings demonstrate different types of cardiovascular responses associated with different psychological experiences during trauma recall. Future research directions were discussed.
Databáze: Directory of Open Access Journals
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