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Related Experiment Video

Updated: May 1, 2026

VisualEyes: A Modular Software System for Oculomotor Experimentation
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Cross-Modal Interactions Between Auditory Attention and Oculomotor Control.

Sijia Zhao1, Claudia Contadini-Wright2, Maria Chait3

  • 1Department of Experimental Psychology, University of Oxford, Oxford OX2 6GG, United Kingdom sijia.zhao@psy.ox.ac.uk m.chait@ucl.ac.uk.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|February 8, 2024
PubMed
Summary

Microsaccadic inhibition (MSI) is initially reflexive but later stages are modulated by auditory attention. Attending to a sound stream enhances MSI for attended events, impacting eye movement control.

Keywords:
attentionmicrosaccadespupil constrictionpupil dilation

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Cognitive Psychology

Background:

  • Microsaccades are small, involuntary eye movements during fixation, with debated roles in scene perception.
  • Microsaccadic inhibition (MSI) is a suppression of microsaccades following stimulus onset, potentially linked to attention.
  • The influence of top-down attention on MSI remains unclear, particularly distinguishing reflexive from cognitive control.

Purpose of the Study:

  • To investigate the impact of auditory top-down attention on microsaccadic inhibition (MSI).
  • To differentiate between reflexive and attention-modulated stages of MSI.
  • To disentangle ocular dynamics from visual sensory processing in MSI research.

Main Methods:

  • Developed a task involving simultaneous auditory streams with participants attending to one stream.
  • Quantified MSI in response to task-irrelevant auditory events in both attended and unattended streams.
  • Utilized frequency steps and omissions as task-irrelevant events across two experiments.

Main Results:

  • Early stages of MSI (within ~0.1s) were unaffected by auditory attention.
  • Later stages of MSI (around ~0.25s) showed enhanced inhibition for attended auditory events.
  • Auditory attention modulated the extent and duration of microsaccadic inhibition.

Conclusions:

  • Early stages of microsaccadic inhibition appear to be reflexive.
  • Auditory attention significantly modulates later stages of MSI.
  • Findings support MSI's role in attentional re-orienting networks and cognitive processing.