Startle responses in motor vehicle accident survivors: A pilot longitudinal study

Karl, Anke, Malta, Loretta, Alexander, Jeff and Blanchard, Edward B. (2004) Startle responses in motor vehicle accident survivors: A pilot longitudinal study. Applied Psychophysiology and Biofeedback, 29, (3), 223-232. (doi:10.1023/B:APBI.0000039060.57276.aa).


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The aim of the present study was to investigate startle responses in motor vehicle accident (MVA) survivors to trauma-related, startle, and neutral sounds. Participants were 17 MVA
survivors, 11 of whom participated in a controlled treatment study comparing cognitivebehavioral treatment (CBT) and supportive therapy (ST) versus a waitlist condition.

Though participants differed significantly in their pretreatment clinical status and symptom severity, these differences were not reflected by group differences in EMG (at orbicularis oculi) to the stimuli at the initial assessment. Some cue-specificity was found, as all participants showed larger startle responses to trauma-related sounds, compared to startle and neutral sounds.

At posttreatment, a significant reduction in EMG reactivity to all stimuli was observed in participants who received active treatment (either CBT or ST), compared to waitlist controls. The use of startle responses as a PTSD treatment outcome index is discussed.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1023/B:APBI.0000039060.57276.aa
ISSNs: 1090-0586 (print)
Related URLs:
Keywords: posttraumatic stress disorder (ptsd), startle reflex emg, sr response, cognitive behavioral, treatment (cbt), treatment outcome
Subjects: Q Science > QP Physiology
B Philosophy. Psychology. Religion > BF Psychology
Divisions : University Structure - Pre August 2011 > School of Psychology > Division of Clinical Neuroscience
ePrint ID: 40406
Accepted Date and Publication Date:
Date Deposited: 05 Jul 2006
Last Modified: 31 Mar 2016 12:11

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