Transient perceptual enhancements resulting from selective shifts of exogenous attention in the central fovea.

ABSTRACT: Exogenous attention, a powerful adaptive tool that quickly and involuntarily orients processing resources to salient stimuli, has traditionally been studied in the lower-resolution parafoveal and peripheral visual field.^1-4 It is not known whether and how it operates across the 1° central fovea where visual resolution peaks.^5,6 Here we investigated the dynamics of exogenous attention in the foveola. To circumvent the challenges posed by fixational eye movements at this scale, we used high-precision eye-tracking and gaze-contingent display control for retinal stabilization.⁷ High-acuity stimuli were briefly presented foveally at varying delays following an exogenous cue. Attended and unattended locations were just a few arcminutes away

SUBMITTER: Guzhang Y 

PROVIDER: S-EPMC8763350 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature