Real-time monitoring of eye movements using infrared video-oculography during functional magnetic resonance imaging of the frontal eye fields

Darren R. Gitelman*, Todd B. Parrish, Kevin S. Labar, M. Marsel Mesulam

*Corresponding author for this work

Research output: Contribution to journalArticle

58 Scopus citations

Abstract

Monitoring eye movements is a critical aspect of experimental design for studies of spatial attention and visual perception. However, obtaining online eye movement recordings has been technologically difficult during functional magnetic resonance (MR) imaging studies. Previous approaches to monitoring eye movements either have distorted the MR images or have shown MR-related interference in the recordings. We report a technique using long-range infrared videooculography to record eye movements without causing artifacts in the MR images. Analysis of the MR signal from a phantom obtained with the eye-movement equipment turned on or off confirmed the absence of significant additional noise in the MR time series. Eye movements of three subjects were monitored while they performed tasks of covert and overt shifts of spatial attention. Activation of the frontal eye fields during the covert task was seen even when the eye movement recordings demonstrated no significant difference in saccadic eye movements between the baseline and the active conditions.

Original languageEnglish (US)
Pages (from-to)58-65
Number of pages8
JournalNeuroimage
Volume11
Issue number1
DOIs
StatePublished - Jan 2000

ASJC Scopus subject areas

  • Neurology
  • Cognitive Neuroscience

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