bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 31, 2024

Abstract Task-evoked pupil dilation has been linked to many cognitive variables, perhaps most notably unexpected events. Zénon (2019) proposed a unifying framework stating that related cognition should be considered from an information-theory perspective. In the current study, we investigated whether pupil’s response decision outcome in context of associative learning reflects prediction error defined formally as information gain, while also exploring time course this signal. To do so, adapted simple model trial-by-trial stimulus probabilities based on theory previous literature. We analyzed two data sets which participants performed perceptual decision-making tasks required was recorded. Our findings consistently showed significant proportion variability post-feedback during can explained by formal quantification gain shortly after feedback presentation both task contexts. later window, relationship between information-theoretic variables and differed per task. For first time, present evidence dilates or constricts along with seems dependent, specifically increasing decreasing average uncertainty (entropy) across trials. This study offers empirical showcasing how offer valuable insights into process updating learning, highlighting promising utility readily accessible physiological indicator for investigating internal belief states.

Language: Английский