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Related Experiment Video

Updated: Apr 22, 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

The visual component to saccadic compression.

Eckart Zimmermann¹, M Concetta Morrone², David C Burr³

¹Cognitive Neuroscience (INM3), Institute of Neuroscience and Medicine, Research Centre Juelich, Juelich, Germany.

Journal of Vision

|October 15, 2014

Summary

This summary is machine-generated.

Saccadic compression, a visual mislocalization phenomenon, is influenced by saccadic targets. The presence and timing of a target before eye movements significantly impact this perceptual distortion.

Keywords:

mislocalization perisaccadic visual space

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Area of Science:

Neuroscience
Vision Science
Perception

Background:

Saccadic eye movements are rapid, ballistic movements.
Visual objects near saccades are often mislocalized towards the saccade endpoint, termed saccadic compression.
The precise mechanisms modulating saccadic compression remain under investigation.

Purpose of the Study:

To investigate how the presence and timing of a visual saccadic target influence perisaccadic mislocalization.
To determine the temporal window for saccadic target presentation that elicits maximal saccadic compression.
To explore the role of reference objects in modulating saccadic compression.

Main Methods:

Psychophysical experiments involving saccadic eye movements to visual targets.
Systematic variation of saccadic target onset relative to saccade execution.
Manipulation of reference object placement during saccades.
Analysis of visual object localization accuracy.

Main Results:

Perisaccadic compression is significantly modulated by the presence of a visual saccadic target.
Absence of a target leads to more veridical localization compared to trials with a target.
Saccadic targets presented approximately 100 ms before saccade execution induce the strongest mislocalization.
Mislocalization is directed towards the position of a reference object when present.

Conclusions:

Saccadic compression is not an inherent property of saccades but is actively modulated by visual contextual information.
The timing of target presentation relative to saccade initiation is critical for inducing significant mislocalization.
These findings suggest saccadic compression reflects a neural mechanism integrating pre- and post-saccadic visual information to stabilize perception.