کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
930837 1474398 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Heart rate pattern and resting heart rate variability mediate individual differences in contextual anxiety and conditioned responses
ترجمه فارسی عنوان
الگوی ضربان قلب و تغییرات ضربان قلب استراحت میان اختلافات فردی در اضطراب زمینه ای و پاسخ های شرطی است
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
چکیده انگلیسی


• Cardiac deceleration is associated with enhanced contextual anxiety and impaired startle fear conditioning.
• Acquisition of subjective distress is increased in decelerators.
• Explorative analyses suggest that resting HRV differentially modulates contextual anxiety and acquisition of SCR.

Cardiac activity provides possible markers for the identification of those at risk for the development of anxiety disorders. Cardiac deceleration has been linked to impaired fear conditioning while low heart rate variability (HRV) has been associated with elevated contextual anxiety and enhanced startle potentiation to affective stimuli. In the current study we examined individual differences in conditioned responses as a function of cardiac activity. In addition to classifying participants as decelerators and accelerators, we examined baseline fear responding and conditioned responses in participants with low and high resting state heart rate variability. We complemented well-established physiological measures (startle response and skin conductance) and online distress and retrospective expectancy ratings of fear conditioning with measures of heart rate (HR). In contrast to accelerators, decelerators did not show any sign of startle fear conditioning, but demonstrated increased differential conditioning of online distress. Only marginal differences in contextual anxiety and conditioned fear responding were observed for low and high HRV individuals. These results may contribute to the identification of individuals who are at risk for the development of anxiety disorders.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Psychophysiology - Volume 98, Issue 3, Part 2, December 2015, Pages 567–576
نویسندگان
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