Motion Masking by Stationary Objects: A Study of Simulated Saccades

I-Perception
Marianne DuyckThérèse Collins

Abstract

Saccades are crucial to visual information intake by re-orienting the fovea to regions of interest in the visual scene. However, they cause drastic disruptions of the retinal input by shifting the retinal image at very high speeds. The resulting motion and smear are barely noticed, a phenomenon known as saccadic omission. Here, we studied the perception of motion during simulated saccades while observers fixated, moving naturalistic visual scenes across the retina with saccadic speed profiles using a very high temporal frequency display. We found that the mere presence of static pre- and post-saccadic images significantly reduces the perceived amplitude of motion but does not eliminate it entirely. This masking of motion perception could make the intra-saccadic stimulus much less salient and thus easier to ignore.

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Citations

Mar 7, 2020·ELife·Eckart Zimmermann
Jun 11, 2020·Scientific Reports·Shuhei TakanoSatoshi Shioiri
Jun 19, 2021·Journal of Vision·Doris I BraunKarl R Gegenfurtner
Oct 27, 2021·Journal of Vision·Gaëlle NicolasAnne Guérin-Dugué

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