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- W4223992324 abstract "Conditioned fear can substantially reduce the likelihood that an individual will engage in reward-related behavior--a phenomenon coined conditioned suppression. Despite the unmistakable relevance of conditioned suppression for excessive fears and their adverse consequences, the phenomenon has primarily been observed in animal models and is not yet well understood. Here, we aimed to develop a conditioned suppression paradigm that enables a robust quantification of the effect of Pavlovian fear on subsequent reward-related behavior in humans and assess its potential relation to physiological measures of fear. In phase 1, an instrumental response was incentivized with monetary rewards. In phase 2, one of two conditioned stimuli (CS+) was reinforced with an aversive unconditioned stimulus (US, i.e., electric stimulus). During Pavlovian fear learning we assessed differential skin conductance (SCR) and fear- potentiated startle responses (FPS). Lastly, we tested the effect of the fear conditioned CS+ on the response rate of the instrumental response in a transfer phase. Despite strong Pavlovian fear conditioning, as indicated by large effect sizes in differential SCR and FPS, we did not find any evidence for conditioned suppression: that is, there was no significant reduction of instrumental responding in the presence of the CS+ compared to a new control stimulus. This lack of conditioned suppression is in line with previous studies that reported difficulties inducing conditioned suppression and points toward a general challenge in investigating conditioned suppression in humans. Implications and directions for future research on the highly relevant behavioral effects of fear and anxiety are discussed." @default.
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- W4223992324 date "2022-04-16" @default.
- W4223992324 modified "2023-09-26" @default.
- W4223992324 title "In search of the behavioral effects of fear: A paradigm to assess conditioned suppression in humans" @default.
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- W4223992324 doi "https://doi.org/10.1111/psyp.14079" @default.
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