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  • Use for simultaneous EEG-fMRI or for routine EEG
  • Uses High Density EEG up to 256 channels for the highest spatial resolution
  • Amplifier can be placed in the MR room outside the bore to minimize noise
  • Built-in artifact cleaning module can be used online or offline
  • Compatibility up to 7T 
Geodesic Sensor Net for high density EEG EGI artifact handling button See a list of EEG-MR and EEG-MEG publications
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  • System Features

    • Versatility. Use your GES MR in the MR environment or in the lab. There is no need for separate systems.
    • Reduced noise. The Field Isolation Containment System (FICS) features shielding and input filtering that significantly reduce the effect of noise sources in the MR environment.
    • Channel counts. EGI’s fMRI compatible EEG systems are available with 32, 64, 128, or 256 channels.
    • Upgradeable channel counts. MR-compatible GES 400 systems are upgradeable by channel count so you can work with the full power of dense array EEG when you are ready.

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  • MR-compatible Geodesic EEG System 400

    GES 400 MR 042017Systems are sold as complete packages with everything you will need to start work immediately. You can choose from either stationary or portable configurations, which can include:

    • Net Amps amplifier and wall mount
    • hospital grade isolation transformer
    • iMac or MacBook Pro computer
    • Field Isolation Containment System (FICS)
    • Net Station 5 software with artifact removal module
    • GES Clock Sync I/O
    • Net support kit
    • system manuals
    • installation and basic training
    • 2 year amplifier warranty

    If you already own a Geodesic EEG System, you may upgrade your system for use in an MR environment with the fMRI Upgrade Package, which includes:

    • Field Isolation Containment System (FICS). This enclosure for the FICS-compatible Net Amps 400 amplifier includes input RF filters, 2 fiber optic channels, and a battery power pack.
    • Artifact Removal Module for Net Station software
    • GES Clock Sync I/O

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  • g00252 mr eeg setup

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See how one EGI customer is using EEG-fMRI in his lab.

High Density EEG-fMRI 


EGI Education and SupportA member of EGI’s renowned international Training and Technical Support Team will install your system and provide your lab with a tutorial for basic use. Your support contract will enable you to obtain the support you need to keep your system running at peak performance.

Each purchase of a GES product also includes tuition waivers to EGI Schools or workshops that provide in-depth learning for any member of your team. EGI also offers custom training for new lab members, or for anyone looking to learn more about using the GES system to its maximum potential.


This instrument is not intended for use in diagnosis or treatment of any disease or condition. It is a scientific research instrument designed for performing measurements and acquiring data for neurophysiological research. MagstimEGI makes no representation of the suitability of the instrument for any particular research study.