Individual differences in belief updating and phasic arousal are related to psychosis proneness.

ABSTRACT: Many decisions entail the updating of beliefs about the state of the environment by accumulating noisy sensory evidence. This form of probabilistic reasoning may go awry in psychosis. Computational theory shows that optimal belief updating in environments subject to hidden changes in their state requires a dynamic modulation of the evidence accumulation process. Recent empirical findings implicate transient responses of pupil-linked central arousal systems to individual evidence samples in this modulation. Here, we analyzed behavior and pupil responses during evidence accumulation in a changing environment in a community sample of human participants. We also assessed their subclinical psychotic experiences (psychosis proneness). Participants most prone to psychosis showed overall less flex

SUBMITTER: Murphy PR 

PROVIDER: S-EPMC11420346 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature