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Related Experiment Video

Updated: May 17, 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

The fixation and saccade P3.

Sangita Dandekar1, Jian Ding, Claudio Privitera

  • 1Vision Science Graduate Program, University of California, Berkeley, California, United States of America. sd93@nyu.edu

Plos One
|November 13, 2012
PubMed
Summary
This summary is machine-generated.

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Object recognition during natural viewing involves saccades, but P3 brain responses are similar whether measured during fixation or after saccade landing. This finding supports using P3 signals in brain-computer interfaces that permit eye movements.

Area of Science:

  • Cognitive Neuroscience
  • Neurophysiology
  • Human-Computer Interaction

Background:

  • Object recognition typically occurs during natural viewing with saccades, yet neural correlates are primarily studied during fixation.
  • Post-saccadic neural activity modulations exist, but their impact on later cognitive components like the P3 remains unexplored.
  • The P3 component, measured at fixation, is crucial for brain-computer interfaces (BCIs).

Purpose of the Study:

  • To investigate if post-saccadic modulations affect the P3 component.
  • To compare the P3 characteristics (start time, persistence, amplitude) between fixation and saccade trials.
  • To assess the viability of the post-saccadic P3 for BCIs that allow eye movements.

Main Methods:

  • EEG recordings were used to measure P3 responses.

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Related Experiment Videos

Last Updated: May 17, 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

Recording Horizontal Saccade Performances Accurately in Neurological Patients Using Electro-oculogram
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Recording Horizontal Saccade Performances Accurately in Neurological Patients Using Electro-oculogram

Published on: March 13, 2018

  • P3 activity was analyzed in trials with fixation versus trials immediately following saccadic landing.
  • Target minus distracter comparisons were employed to isolate sensory neural responses.

    • Main Results:

    • No significant differences were found in P3 start time, temporal persistence, or amplitude between fixation and saccade trials.
    • Sensory neural responses were found to cancel out in the target minus distracter comparisons.
    • Late-occurring cognitive neural components, like the P3, appear less sensitive to post-saccadic modulations than early sensory responses.

    Conclusions:

    • The P3 component is likely robust to post-saccadic modulations, unlike earlier sensory neural activity.
    • The similarity between fixation and saccade P3 suggests its potential as a viable signal for BCIs.
    • This research could lead to improved BCIs that accommodate natural eye movements during operation.