Related Experiment Video
Updated: Mar 16, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
Published on: March 18, 2019
Saccades Follow Perception When Judging Location
Funda Yildirim1, Frans W Cornelissen1
1Laboratory of Experimental Ophthalmology, University Medical Center Groningen, University of Groningen, Netherlands.
Abstract:
An unresolved question in vision research is whether perceptual decision making and action are based on the same or on different neural representations. Here, we address this question for a straightforward task, the judgment of location. In our experiment, observers decided on the closer of two peripheral objects-situated on the horizontal meridian in opposite hemifields-and made a saccade to indicate their choice. Correct saccades landed close to the actual (physical) location of the target. However, in case of errors, saccades went in the direction of the more distant object, yet landed on a position approximating that of the closer one. Our finding supports the notion that perception and action-related decisions on object location rely on the same neural representation.
Related Concept Videos
Major Somatic Sensory Pathways
Depth Perception and Spatial Vision
Perceptual Constancy
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
Perception
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
Gestalt Principles of Perception
Vision

