Effect of Comorbid Post-Traumatic Stress Disorder and Panic Disorder on Defensive Responding

Although panic disorder (PD) and post-traumatic stress disorder (PTSD) are characterized by heightened sensitivity to threat, no study to date has examined the effect of comorbid PD and PTSD on defensive responding. The present study probed startle eyeblink response to an acoustic probe in three gro...

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Bibliographic Details
Published in:Journal of psychophysiology 2018-04, Vol.32 (2), p.43-52
Main Authors: Katz, Andrea C., Weinberg, Anna, Gorka, Stephanie M., Auerbach, Randy P., Shankman, Stewart A.
Format: Article
Language:English
Subjects:
Comorbidity
Defense Mechanisms
Female
Human
Male
Panic Disorder
Posttraumatic Stress Disorder
Responses
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Summary:Although panic disorder (PD) and post-traumatic stress disorder (PTSD) are characterized by heightened sensitivity to threat, no study to date has examined the effect of comorbid PD and PTSD on defensive responding. The present study probed startle eyeblink response to an acoustic probe in three groups of participants recruited from the community: (1) healthy individuals (n = 63), (2) individuals with PD without PTSD (n = 62), and (3) individuals with comorbid PD and PTSD (n = 24). Results indicated that PD individuals without PTSD exhibited greater sensitivity to threat relative to controls, and comorbid individuals displayed attenuated sensitivity to threat relative to PD individuals without PTSD (both ps 
ISSN:0269-8803
2151-2124
DOI:10.1027/0269-8803/a000193