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Verfasst von:Wendt, Julia [VerfasserIn]   i
 König, Jörg [VerfasserIn]   i
 Hufenbach, Miriam C. [VerfasserIn]   i
 Koenig, Julian [VerfasserIn]   i
 Thayer, Julian F. [VerfasserIn]   i
 Hamm, Alfons O. [VerfasserIn]   i
Titel:Vagally mediated heart rate variability and safety learning
Titelzusatz:Effects of instructions and number of extinction trials
Verf.angabe:Julia Wendt, Jörg König, Miriam C. Hufenbach, Julian Koenig, Julian F. Thayer, Alfons O. Hamm
E-Jahr:2019
Jahr:31 May 2019
Umfang:13 S.
Fussnoten:Gesehen am 10.12.2019
Titel Quelle:Enthalten in: Psychophysiology
Ort Quelle:Malden, Mass. [u.a.] : Wiley-Blackwell, 1964
Jahr Quelle:2019
Band/Heft Quelle:56(2019,10) Artikel-Nummer e13404, 13 Seiten
ISSN Quelle:1469-8986
 1540-5958
Abstract:Extinction of conditioned fear serves as a laboratory model for the mechanism of action underlying exposure treatment with patients suffering from anxiety disorders. Thus, an enhanced understanding of individual differences in extinction learning may help to improve exposure procedures by tailoring treatment plans to the specific needs of the patient. Vagally mediated heart rate variability (vmHRV) is a promising candidate to investigate individual differences in extinction learning because vmHRV is influenced by an inhibitory prefrontal-amygdala network that is similarly implied in extinction learning. Moreover, low levels of vmHRV were previously associated with a higher prevalence of anxiety disorders and a deficit in safety learning. Here, we report on two studies (Study 1: N = 48; Study 2: N = 120) in which we investigated the boundary conditions of the observed association between vmHRV and safety learning as indexed by startle potentiation during instructed or uninstructed extinction training. In Study 1 (conditional discrimination task), we found that low vmHRV levels are associated with higher CS+ potentiation during instructed extinction. In Study 2 (differential cue conditional task), we observed an association between individual vmHRV levels and defensive responding during CS- presentations and, in later instructed extinction trials, during intertrial intervals. These findings indicate an overactive defensive system in individuals with low levels of vmHRV that interferes with their ability to recognize safety and thus is associated with a general perception of unsafety.
DOI:doi:10.1111/psyp.13404
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: http://dx.doi.org/10.1111/psyp.13404
 DOI: https://doi.org/10.1111/psyp.13404
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:anxiety
 heart rate variability
 individual differences
 startle blink
K10plus-PPN:168496069X
Verknüpfungen:→ Zeitschrift

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