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Abstract

Cognitive defcits in Posttraumatic Stress Disorder (PTSD) and dissociative symptoms suggest theremay be an underlying and persistent problem with temporal processing in PTSD, but this questionhas not been systematically examined. We investigated the ability of a group of PTSD participantsin estimating the duration of supra-second visual stimuli relative to healthy controls. The data of59 participants with PTSD and 62 healthy controls, collected from the BRID database, have beenexamined. Overall, our results indicate that PTSD patients overestimate the duration of the displayedstimuli. Moreover, we found that PTSD are more variable in the time estimation compared to thecontrol group. Finally, we found evidence that working memory and attention impairments wereassociated with time overestimation in PTSD. The fnding of time overestimation in PTSD accords withprevious reports of time overestimation during stressful experiences associated with fear and arousal,but extends fndings to suggest it remains in chronic PTSD populations processing non-emotionalstimuli. The evidence of time overestimation in PTSD suggests the potential relevance of this factor as acognitive marker in assessing the neuropsychological profle of this clinical population.

Item Type:	Article
Authors/Creators:	Vicario, CM and Felmingham, KL
Keywords:	PTSD, Time processing, Working Memory, Attention
Journal or Publication Title:	Scientific reports
Publisher:	Nature Publishing Group
ISSN:	2045-2322
DOI / ID Number:	10.1038/s41598-017-18907-5
Copyright Information:	© 2017 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/
Related URLs:	Google Scholar: Vicario, CM UTAS Profile: Vicario, CM
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