Eye Tracking in MEG

Veli Matti Saarinen*, Veikko Jousmäki

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Magnetoencephalography (MEG) can measure brain activity in ms-level temporal resolution. MEG sensors are super sensitive devices for magnetic signals of the brain but are also prone to electromagnetic interferences. The MEG device is located inside the magnetically shielded room (MSR), and any monitoring device used inside the MSR requires special shielding and its location must be carefully selected to suppress electromagnetic interference. Eye-tracker measures eye movements, providing spatial location of the gaze, pupil diameters, and eye blinks. Eye tracking in MEG enables, for example, categorization of the MEG data based on gaze position and interactive stimulus using gaze position. Combining the methods together will require considering the electromagnetic interference for the MEG—that is, additional shielding, positioning of the eye tracker, and subject-specific issues related to make-up and eye-corrective lenses.

Original languageEnglish
JournalAttention, Perception, and Psychophysics
DOIs
Publication statusE-pub ahead of print - 30 Jan 2024
MoE publication typeA1 Journal article-refereed

Keywords

  • Eye tracking
  • Magnetoencephalography

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