Individual pupil size changes as a robust indicator of cognitive familiarity differences.

ABSTRACT: Cognitive psychology has a long history of using physiological measures, such as pupillometry. However, their susceptibility to confounds introduced by stimulus properties, such as color and luminance, has limited their application. Pupil size measurements, in particular, require sophisticated experimental designs to dissociate relatively small changes in pupil diameter due to cognitive responses from larger ones elicited by changes in stimulus properties or the experimental environment. Here, building on previous research, we present a pupillometry paradigm that adapts the pupil to stimulus properties during the baseline period without revealing stimulus meaning or context by using a pixel-scrambled image mask around an intact image. We demonstrate its robustness in the context of pupilla

SUBMITTER: Franzen L 

PROVIDER: S-EPMC8782349 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature