Neurally-constrained modeling of human gaze strategies in a change blindness task.

ABSTRACT: Despite possessing the capacity for selective attention, we often fail to notice the obvious. We investigated participants' (n = 39) failures to detect salient changes in a change blindness experiment. Surprisingly, change detection success varied by over two-fold across participants. These variations could not be readily explained by differences in scan paths or fixated visual features. Yet, two simple gaze metrics-mean duration of fixations and the variance of saccade amplitudes-systematically predicted change detection success. We explored the mechanistic underpinnings of these results with a neurally-constrained model based on the Bayesian framework of sequential probability ratio testing, with a posterior odds-ratio rule for shifting gaze. The model's gaze strategies and success rates

SUBMITTER: Jagatap A 

PROVIDER: S-EPMC8478260 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature