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- W1569355294 abstract "Although the conditioned cardiac fear response is an important index of psychophysiological fear processing, underlying neural mechanisms remain unclear. N = 22 participants underwent differential fear conditioning and extinction with face pictures as conditioned stimuli (CS) and loud noise bursts as aversive unconditioned stimulus (US) on Day 1 and a recall test 1 day later. We assessed ERPs, evoked heart period (HP), and time-lagged within-subject correlations of single-trial EEG amplitude and HP as index for corticocardiac coupling in response to the CS. Fear-conditioned stimuli (CS+) triggered cardiac deceleration during fear acquisition and recall. Meanwhile, only during Day 1 acquisition, CS+ evoked larger late positivities in the ERP than CS-. Most importantly, during Day 2 recall, stimulus-evoked single-trial EEG responses in the time window between 250 and 500 ms predicted the magnitude of cardiac fear responses 2 to 5 s later. This marker of corticocardiac coupling selectively emerged in response to not previously extinguished CS+ but was absent in response to CS- or previously extinguished CS+. The present results provide first evidence that fear conditioning and extinction modulate functional corticocardiac coupling in humans. Underlying mechanisms may involve subcortical structures enhancing corticocardiac transmission to facilitate processing of consolidated conditioned fear." @default.
- W1569355294 created "2016-06-24" @default.
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- W1569355294 date "2015-07-20" @default.
- W1569355294 modified "2023-09-26" @default.
- W1569355294 title "Conditioned and extinguished fear modulate functional corticocardiac coupling in humans" @default.
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- W1569355294 doi "https://doi.org/10.1111/psyp.12498" @default.
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