منابع مشابه
Startle reflex modulation during threat of shock and "threat" of reward.
During threat of shock, the startle reflex is potentiated, suggesting modulation by defensive mobilization. To determine whether startle potentiation is specific to aversive anticipation, startle reflexes were measured in the context of either aversive or appetitive anticipation in a between-subject study. Participants wore a device on the wrist that could deliver electrical shock (n = 49), or ...
متن کاملAffective modulation of eyeblink startle with reward and threat.
An emotion-modulated acoustic startle paradigm for inducing positive and negative affect was used to address pregoal and postgoal affect. Participants played a computerized lottery task in which they chose digits that could match a subsequently displayed, random set of numbers. In the positive conditions, matches led to monetary rewards. In the negative condition, matches led to an aversive noi...
متن کاملAdditive Effects of Threat-of-Shock and Picture Valence on Startle Reflex Modulation
The present study examined the effects of sustained anticipatory anxiety on the affective modulation of the eyeblink startle reflex. Towards this end, pleasant, neutral and unpleasant pictures were presented as a continuous stream during alternating threat-of-shock and safety periods, which were cued by colored picture frames. Orbicularis-EMG to auditory startle probes and electrodermal activit...
متن کاملDifferences in startle modulation during instructed threat and selective attention.
This study investigated whether attentional processes contribute to fear-potentiated startle. Ten subjects participated in a threat of shock experiment and an attentional control condition. In the threat of shock experiment, visual cues indicated whether or not an aversive shock might occur. In the attentional control, the shocks were replaced by faint vibrotactile stimuli that had to be counte...
متن کاملModulation of the startle reflex by heat pain: does threat play a role?
BACKGROUND Previous studies have indicated that the startle reflex is potentiated by phasic, but not by tonic, heat pain, although the latter is seen as more strongly associated with emotional responses and more similar to clinical pain. The threat value of pain might be a decisive variable, which is not influenced alone by stimulus duration. OBJECTIVE This study aimed at comparing startle re...
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ژورنال
عنوان ژورنال: Psychophysiology
سال: 2017
ISSN: 0048-5772
DOI: 10.1111/psyp.12989