Robust planning tools to optimize for each individual

Create an MR-based individualized head model or select an age-matched atlas

• Account for intersubject differences from the start

Design your custom stimulation protocols in one of three ways:

• Manually select electrodes and current level
• Choose a region of interest within the brain to target
• Use EEG-based source localization to guide the stimulation paradigm

Localize with confidence

• High density, whole head electrode coverage and finite difference method head models allow for highly accurate source localization

Apply the reciprocity theorem to align stimulation with physiology

• A cortical source’s scalp voltage projection is the same as the scalp stimulation required to stimulate/modulate that cortical source ¹

Maximize flexibility with a larger array of montages

Localize targeting by selecting, combining custom stimulation arrays

• Up to 256 channels of EEG, of which 190 channels can be used for stimulation, with spatial selectivity to stimulate multiple anodal/cathodal pairs at a given time (minimum of 10 pairs needed to achieve maximum current)

Achieve greater focality with smaller stimulation sensors

• 1cm² enables 0.2mA/cm² current density in patch electrodes

Measure the targets and effects with HD EEG

• Use EEG-based source localization to guide the stimulation paradigm and seamlessly record EEG while stimulating

Close the loop and change protocols in real-time driven by physiology

• Use the Software Developers’ Kit (SDK) and other open-source platforms to develop and perform closed-loop neuromodulation

The Geodesic Transcranial Electrical Neuromodulation (GTEN)* system is a unique and powerful research platform combining noninvasive neuromodulation with HD EEG.

*Geodesic Transcranial Electrical Neuromodulation 200 (GTEN 200) System 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.

Noninvasive Electrical Neuromodulation

GTEN 200

1. Luu P, Essaki Arumugam EM, Anderson E, Gunn A, Rech D, Turovets S and Tucker DM (2016) Slow-Frequency Pulsed Transcranial Electrical Stimulation for Modulation of Cortical Plasticity Based on Reciprocity Targeting with Precision Electrical Head Modeling. Front. Hum. Neurosci. 10:377. doi: 10.3389/ fnhum.2016.00377