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Related Experiment Video

Updated: May 22, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
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Central fixations with rightward deviations: saccadic eye movements on the landmark task.

Nicole A Thomas1, Tobias Loetscher, Michael E R Nicholls

  • 1School of Psychology, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia. nicole.thomas@flinders.edu.au

Experimental Brain Research
|May 25, 2012
PubMed
Summary

Neurologically normal individuals exhibit a leftward attentional bias during visuospatial tasks. Analyzing eye movements, specifically saccades, reveals a rightward gaze tendency related to task responses, offering new insights into pseudoneglect.

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Area of Science:

  • Cognitive Neuroscience
  • Visuospatial Processing
  • Oculomotor Behavior

Background:

  • Neurologically normal individuals often display a leftward attentional bias, linked to right hemisphere activity in visuospatial tasks.
  • Factors like line length and presentation time influence this bias, but the role of eye movements remains unclear.

Purpose of the Study:

  • To investigate how saccadic eye movements contribute to information gathering during visuospatial tasks.
  • To explore the relationship between eye movement patterns (fixations and saccades) and attentional biases, specifically pseudoneglect.

Main Methods:

  • Participants performed the landmark task while their eye movements were recorded.
  • Analysis included both fixation patterns and saccade trajectories using fixation-location data and saccade-based histograms.
  • Eye movement data was correlated with participant responses.

Main Results:

  • Fixations predominantly centered on the line, showing minimal left-right differences.
  • Saccade analysis revealed a tendency for mean eye position to shift rightward of center.
  • Eye movement patterns, particularly saccades, varied significantly with participant responses.

Conclusions:

  • Examining saccades, in addition to fixations, is crucial for understanding eye movement strategies in visuospatial tasks.
  • The observed rightward saccadic tendency may contribute to or reflect the phenomenon of pseudoneglect.
  • This study highlights the dynamic interplay between oculomotor behavior and spatial attention.