ArticleJournal of psychiatric research2020
Examining the cardiovascular response to fear extinction in a trauma-exposed sample.
Article in Journal of psychiatric research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Alpha-2 Adrenoreceptor Antagonist Yohimbine Potentiates Consolidation of Conditioned Fear.The international journal of neuropsychopharmacology · 2022Trial
- Tracking conditioned fear in pair-housed mice using deep learning and real-time cue delivery.Neurobiology of stress · 2025Article
- Central stress pathways in the development of cardiovascular disease.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2024Review
- Protective effects of tetramethylpyrazine on dysfunction of the locus coeruleus in rats exposed to single prolonged stress by anti-ER stress mechanism.Psychopharmacology · 2021Article
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
backgroundTrauma and symptoms of posttraumatic stress disorder (PTSD) have repeatedly been linked to impaired cardiovascular functioning. Poor fear extinction is a well-established biomarker of PTSD that may provide insight into mechanisms underlying cardiovascular risk. The current study probed the cardiovascular response to extinction in a sample of trauma-exposed individuals.
methodsParticipants were 51 trauma-exposed women who underwent a fear conditioning paradigm. Heart rate (HR) during extinction was examined in response to a conditioned stimulus that was previously paired with an aversive unconditioned stimulus (CS+) and one that was never paired (CS-). Heart rate variability (HRV) was calculated at baseline and during the extinction session.
resultsConsistent with fear bradycardia, initial HR deceleration (.5-2s) after CS + onset occurred during early extinction and appeared to extinguish over time. Higher baseline HRV was significantly associated with greater fear bradycardia during early extinction.
conclusionsThis is the first study to demonstrate a pattern of fear bradycardia in early extinction, which was associated with higher HRV levels and decreased over the course of the extinction phase. These results suggest that increased fear bradycardia may be indicative of greater vagal control (i.e., HRV), both of which are psychophysiological biomarkers that may influence cardiovascular and autonomic disease risk in trauma-exposed individuals.
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