Abstract：
:Threat expectancy is the ability to predict an aversive outcome. What is not known is the influence of initial threat responding on the acquisition of verbal, attentional and perceptual biases towards conditioned threat cues. This study evaluated the extent to which initial unconditioned stimulus (UCS) responding was related to trial-by-trial self-reported expectancy, sensory processing (visuocortical EEG) and orienting (heart rate deceleration) to threat cues during extinction learning. Participants (n = 38) viewed oriented Gabor gratings, associated with the presence (CS+) or absence (CS-) of a 96 dB white noise (UCS), flickering at 12 Hz to elicit steady state visually evoked potentials (ssVEPs). Multivariate multiple regression revealed greater initial UCS skin conductance responding to predict extinction responding: enhanced visuocortical discrimination, greater heart rate deceleration to CS+, and greater threat expectancy endorsements. These results suggest that the motivational intensity of initial threat reactivity (sympathetic UCS responding) drives learning-induced defensive dispositions across multiple response systems.
journal_name
Biol Psycholjournal_title
Biological psychologyauthors
Gruss LF,Keil Adoi
10.1016/j.biopsycho.2018.11.009subject
Has Abstractpub_date
2019-01-01 00:00:00pages
64-74eissn
0301-0511issn
1873-6246pii
S0301-0511(18)30269-2journal_volume
140pub_type
杂志文章abstract：:The cerebral processing of emotion has been the subject of a number of recent studies, but results relating to hemispheric asymmetry have been quite mixed. The present study attempted to clarify and extend findings in this area by examining the differential effects of cognitive and affective sets on hemisphere asymmet...
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pub_type： 杂志文章,随机对照试验
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pub_type： 杂志文章,随机对照试验
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pub_type： 杂志文章,随机对照试验
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doi：10.1016/j.biopsycho.2017.07.024
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pub_type： 杂志文章
doi：10.1016/j.biopsycho.2016.01.006
更新日期：2016-03-01 00:00:00
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pub_type： 杂志文章
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pub_type： 临床试验,杂志文章
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pub_type： 杂志文章,随机对照试验
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pub_type： 杂志文章
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pub_type： 杂志文章,评审
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更新日期：2008-03-01 00:00:00
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pub_type： 杂志文章
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