Work

The time-dependent modulation of saccade amplitude by illusory length reflects a shared representation between perception and action.

Year: 2025

Type: article

Abstract: = 114) between 2022 and 2025, measuring the amplitude of saccades performed along horizontal lines embedded in Müller-Lyer figures carefully designed to control for center-of-gravity biases. Results showed that both saccade amplitude and length judgment were systematically modulated by the illusion beyond what could be attributed to changes in the actual center of gravity, its saliency, or computation time. Additionally, the illusion's influence on saccade amplitude diminished after a longer previewing time (2,000 ms) compared to a shorter one (50 ms). These findings support the hypothesis that perception and oculomotor behavior rely on a shared visual representation that is influenced by contextual information but becomes more precise with increased processing time. (PsycInfo Database Record (c) 2026 APA, all rights reserved).

Source: Journal of Experimental Psychology Human Perception & Performance

DOI: 10.1037/xhp0001382

Authors: Laurie Geers, Karine Doré-Mazars, Michael Andres

Institutions: UCLouvain, Université Paris Cité

Language: English

Topic: Visual perception and processing mechanisms

Subfield: Cognitive Neuroscience

Field: Neuroscience

Domain: Life Sciences

Open Access status: green

Funders: Fonds De La Recherche Scientifique - FNRS, Fédération Wallonie-Bruxelles

Awards: G1337813280, G8889694646