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Related Experiment Video

Updated: Mar 20, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

Saccade Preparation Reshapes Sensory Tuning.

Hsin-Hung Li¹, Antoine Barbot², Marisa Carrasco³

¹Department of Psychology, New York University, 6 Washington Place, New York, NY 10003, USA.

Current Biology : CB

|June 7, 2016

Summary

This summary is machine-generated.

Preparing for eye movements (saccades) sharpens visual processing, enhancing high spatial frequencies and narrowing orientation tuning before the eyes move. This visual system adaptation improves perception for upcoming visual information.

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Area of Science:

Cognitive Neuroscience
Visual Perception
Ophthalmology

Background:

Human observers use rapid eye movements called saccades to direct their fovea towards behaviorally relevant information.
Previous research indicates that visual performance can improve at saccade target locations before eye movement, suggesting extra-retinal signals enhance perception.
The precise impact of presaccadic modulations on the processing of specific visual features remains largely unexplored.

Purpose of the Study:

To investigate how saccade preparation influences the processing of orientation and spatial frequency, fundamental elements of early visual processing.
To determine if presaccadic modulations dynamically reshape visual representations by altering feature selectivity.

Main Methods:

Employed a psychophysical reverse correlation approach to analyze the influence of saccade preparation on visual feature processing.
Examined the processing of orientation and spatial frequency, moving beyond simple performance accuracy measures.

Main Results:

Saccade preparation selectively enhanced the gain of high spatial frequency information at the impending saccade landing site.
Orientation tuning was narrowed presaccadically at the saccade target location.
These modulations were time-locked to saccade onset, peaking immediately before eye movement, and were not replicated by attention alone.

Conclusions:

Presaccadic modulations dynamically reshape feature selectivity, demonstrating a strong coupling between perception and action.
These findings align with neurophysiological evidence of presaccadic enhancement and receptive field shifts.
Saccade preparation may facilitate transaccadic integration by pre-processing visual information to be more fovea-like.