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Related Experiment Video

Updated: Jun 19, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
06:46

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

Published on: March 18, 2019

Human microsaccade-related visual brain responses.

Olaf Dimigen1, Matteo Valsecchi, Werner Sommer

  • 1Helmholtz Center for Mind and Brain Dynamics, University of Potsdam, D-14476 Potsdam, Germany. dimigen@unipotsdam.de

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|October 2, 2009
PubMed
Summary
This summary is machine-generated.

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Microsaccades, tiny involuntary eye movements, generate significant cortical activity detectable in EEG. This challenges assumptions in brain imaging studies and reveals a new source of visual brain signals.

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Cognitive Science

Background:

  • Microsaccades are small, involuntary eye movements during fixation.
  • They can create artifacts in electroencephalography (EEG) data.
  • Previous research often overlooked their cortical impact.

Purpose of the Study:

  • To investigate the genuine cortical activity associated with microsaccades.
  • To determine if microsaccades influence event-related potential (ERP) components.
  • To assess the impact of microsaccades on neuroimaging studies.

Main Methods:

  • High-resolution eye movements were co-recorded with EEG.
  • Experiments involved sustained visual fixation and a visual oddball task.
  • Analysis focused on cortical potentials following microsaccade onset.

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Last Updated: Jun 19, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
06:46

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

Published on: March 18, 2019

Using Saccadometry with Deep Brain Stimulation to Study Normal and Pathological Brain Function
05:44

Using Saccadometry with Deep Brain Stimulation to Study Normal and Pathological Brain Function

Published on: July 14, 2016

Main Results:

  • Microsaccades as small as 0.15 degrees produced cortical field potentials.
  • These potentials occurred 100-140 ms post-movement, resembling lambda responses.
  • Microsaccade-related potentials were present in 86% of oddball task trials.

Conclusions:

  • Microsaccades are a source of genuine cortical activity, not just artifacts.
  • They can modulate late ERP components and influence neuroimaging data.
  • Understanding microsaccades is crucial for accurate interpretation of brain activity.