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Related Experiment Video

Updated: Jul 15, 2025

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

Visual perceptual learning modulates microsaccade rate and directionality.

Shao-Chin Hung¹, Antoine Barbot², Marisa Carrasco^2,3

¹Department of Psychology, New York University, New York, USA. sch462@nyu.edu.

Scientific Reports

|October 2, 2023

Summary

This summary is machine-generated.

Microsaccades, small eye movements, change during visual perceptual learning. Fewer microsaccades during fixation correlate with better visual acuity, suggesting they are a marker for learning.

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Published on: March 13, 2018

Area of Science:

Neuroscience
Cognitive Psychology
Ophthalmology

Background:

Microsaccades are small, rapid eye movements crucial for visual processing.
Visual perceptual learning (VPL) involves practice-based improvements in visual discrimination.
The role of microsaccades in VPL is largely unexplored.

Purpose of the Study:

To investigate how microsaccades change during VPL.
To determine if microsaccades can serve as a physiological marker for VPL.

Main Methods:

Human observers trained on a Landolt acuity task for 5 days.
Microsaccade rate and direction were recorded during fixation and response cues.
Participants were assigned to Neutral or Attention groups.

Main Results:

Microsaccade rate decreased during fixation and increased during response cues with training.
Microsaccade direction became biased towards the target location post-training.
Fewer fixation microsaccades correlated with better initial visual acuity.

Conclusions:

Microsaccades dynamically change during VPL, reflecting functional adaptations.
Microsaccade characteristics may serve as a physiological marker for VPL.
Findings were consistent across different training groups and locations.