Dynamics of sensory and decisional biases in perceptual decision making: Insights from the face distortion illusion.

ABSTRACT: Bias in perceptual decision making can have both sensory and decisional origins. These distinct sources of bias are typically seen as static and stable over time. However, human behavior is dynamic and constantly adapting. Yet it remains unclear how sensory and decisional biases progress in distinct ways over time. We addressed this question by tracking the dynamics of sensory and decisional biases during a task that involves a visual illusion. Observers saw multiple pairs of peripherally presented faces that induce a strong illusion making the faces appear distorted and grotesque. The task was to judge whether one of the last two faces had true physical distortion (experimentally introduced in half of the trials). Initially, participants classified most faces as distorted as exemplified b

SUBMITTER: Gao Y 

PROVIDER: S-EPMC12208945 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature