Investigating pupillometry as a novel mechanism for detecting emotional regulation difficulties in individuals with PTSD

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dc.contributor.advisorStein, Dan Jen_ZA
dc.contributor.advisorThomas, Eileenen_ZA
dc.contributor.authorGinton, Leeen_ZA
dc.date.accessioned2018-02-12T08:56:44Z
dc.date.available2018-02-12T08:56:44Z
dc.date.issued2017en_ZA
dc.description.abstractObjective: Individuals with posttraumatic stress disorder (PTSD) have been found to exhibit emotional regulation difficulties. However, much remains to be learned about the specific neural mechanisms that underlie such difficulties. This study aimed to use eye tracking to investigate the mechanisms underlying emotional regulation difficulties in individuals with PTSD. Method: A total of 87 trauma-exposed mothers (34 PTSD positive and 53 non-PTSD controls) completed an eye tracking assessment in which pupillary dilation in response to emotionally valenced stimuli was measured. The participants also completed two self-report measures of emotional regulation. Results: The PTSD group exhibited increased pupillary dilation to positively valenced stimuli compared to the trauma-exposed, non-PTSD group. In contrast, there was no difference between the two groups using self-report measures of emotional regulation. Additionally, there were no associations between self-report measures and pupillary response to emotionally valenced stimuli. Conclusion: The findings may reflect impaired parasympathetic nervous system processes in individuals with PTSD. The finding that eye tracking, but not emotional regulation questionnaires, differentiated the groups may reflect the point that self-report measures are biased by an individual's ability and willingness to respond. These findings need to be followed up with additional experiments to delineate parasympathetic and other mechanisms involved in underpinning emotional regulation difficulties in PTSD.en_ZA
dc.identifier.apacitationGinton, L. (2017). <i>Investigating pupillometry as a novel mechanism for detecting emotional regulation difficulties in individuals with PTSD</i>. (Thesis). University of Cape Town ,Faculty of Health Sciences ,Department of Psychiatry and Mental Health. Retrieved from http://hdl.handle.net/11427/27530en_ZA
dc.identifier.chicagocitationGinton, Lee. <i>"Investigating pupillometry as a novel mechanism for detecting emotional regulation difficulties in individuals with PTSD."</i> Thesis., University of Cape Town ,Faculty of Health Sciences ,Department of Psychiatry and Mental Health, 2017. http://hdl.handle.net/11427/27530en_ZA
dc.identifier.citationGinton, L. 2017. Investigating pupillometry as a novel mechanism for detecting emotional regulation difficulties in individuals with PTSD. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Ginton, Lee AB - Objective: Individuals with posttraumatic stress disorder (PTSD) have been found to exhibit emotional regulation difficulties. However, much remains to be learned about the specific neural mechanisms that underlie such difficulties. This study aimed to use eye tracking to investigate the mechanisms underlying emotional regulation difficulties in individuals with PTSD. Method: A total of 87 trauma-exposed mothers (34 PTSD positive and 53 non-PTSD controls) completed an eye tracking assessment in which pupillary dilation in response to emotionally valenced stimuli was measured. The participants also completed two self-report measures of emotional regulation. Results: The PTSD group exhibited increased pupillary dilation to positively valenced stimuli compared to the trauma-exposed, non-PTSD group. In contrast, there was no difference between the two groups using self-report measures of emotional regulation. Additionally, there were no associations between self-report measures and pupillary response to emotionally valenced stimuli. Conclusion: The findings may reflect impaired parasympathetic nervous system processes in individuals with PTSD. The finding that eye tracking, but not emotional regulation questionnaires, differentiated the groups may reflect the point that self-report measures are biased by an individual's ability and willingness to respond. These findings need to be followed up with additional experiments to delineate parasympathetic and other mechanisms involved in underpinning emotional regulation difficulties in PTSD. DA - 2017 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2017 T1 - Investigating pupillometry as a novel mechanism for detecting emotional regulation difficulties in individuals with PTSD TI - Investigating pupillometry as a novel mechanism for detecting emotional regulation difficulties in individuals with PTSD UR - http://hdl.handle.net/11427/27530 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/27530
dc.identifier.vancouvercitationGinton L. Investigating pupillometry as a novel mechanism for detecting emotional regulation difficulties in individuals with PTSD. [Thesis]. University of Cape Town ,Faculty of Health Sciences ,Department of Psychiatry and Mental Health, 2017 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/27530en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Psychiatry and Mental Healthen_ZA
dc.publisher.facultyFaculty of Health Sciencesen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherNeuroscienceen_ZA
dc.titleInvestigating pupillometry as a novel mechanism for detecting emotional regulation difficulties in individuals with PTSDen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc (Med)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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