Pupil dilation reflects effortful action invigoration in overcoming aversive Pavlovian biases.

ABSTRACT: "Pavlovian" or "motivational" biases describe the phenomenon that the valence of prospective outcomes modulates action invigoration: Reward prospect invigorates action, whereas punishment prospect suppresses it. The adaptive role of these biases in decision-making is still unclear. One idea is that they constitute a fast-and-frugal decision strategy in situations characterized by high arousal, e.g., in presence of a predator, which demand a quick response. In this pre-registered study (N = 35), we tested whether such a situation-induced via subliminally presented angry versus neutral faces-leads to increased reliance on Pavlovian biases. We measured trial-by-trial arousal by tracking pupil diameter while participants performed an orthogonalized Motivational Go/NoGo Task. Pavlovian biases w

SUBMITTER: Algermissen J 

PROVIDER: S-EPMC11233311 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature