Conductive gel bridge sensor for motion tracking in simultaneous EEG-fMRI recordings

Noa Cohen*, Evgeny Tsizin, Itzhak Fried, Firas Fahoum, Talma Hendler, Tomer Gazit, Mordekhay Medvedovsky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


EEG-fMRI allows the localization of the hemodynamic correlates of neural activity and has been shown to be useful as a diagnostic tool in pre-surgical evaluation of refractory epilepsy. However, EEG recordings may be highly contaminated by artifacts induced by movements inside the magnetic field thus rendering the scan difficult for interpretation. Existing methods for motion correction require additional equipment or hardware modification. We introduce a simple method for motion artifact detection, the conductive gel bridge sensor (CGBS), easily applicable using the standard setup. We report examples of CGBS use in two patients with epilepsy and demonstrate the method's ability to successfully differentiate between epochs of brain activity and those of movement.

Original languageEnglish
Pages (from-to)117-122
Number of pages6
JournalEpilepsy Research
StatePublished - Jan 2019


FundersFunder number
Sackler Faculty of Medicine
Tel Aviv Sourasky Medical Center


    • Conductive gel bridge
    • EEG-fMRI
    • Epilepsy
    • Motion artifact
    • Motion sensor


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