GTEN 100 Neuromodulation Research System

Fully integrated, individualized noninvasive electrical neuromodulation

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With the GTEN (Geodesic Transcranial Electrical Neuromodulation) 100 neuromodulation research system, achieve true high-definition electrical neuromodulation. Use the same HD EEG Geodesic Sensor Nets to record EEG signals, localize cortical activity, and stimulate brain regions of interest with a variety of protocols.

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All-in-one HD EEG and tES
All-in-one HD EEG and tES

All-in-one HD EEG and tES

Use our 32, 64, 128 or 256 channel HydroCel Geodesic Sensor Net (HCGSN) to both record brain electrical activity and modulate it - without additional sponge pads or electrodes. Simply apply the extremely comfortable HCGSN, open Net Station software to collect EEG data, then modulate brain electrical activity using the GTEN module in Net Station Review.
Consistent neuromodulation
Consistent neuromodulation

Consistent neuromodulation

Even slight differences in cortical source location and orientation across subjects results in drastically different scalp anodal (red) and cathodal (blue) electrode positions¹. GTEN calculates individualized stimulation montages for consistent targeting between subjects.
High fidelity head models
High fidelity head models

High fidelity head models

The reciprocity theorem states that a source’s scalp voltage projection and the stimulation pattern required to modulate that source are the same. Therefore, the accuracy of both source localization and neuromodulation depend on the head model used. Our high fidelity head models thus ensure both the most accurate source localization and neuromodulation results possible.
Focus current on the target
Focus current on the target

Focus current on the target

Use of high fidelity head models allows planning based on individual head and cortical geometry to maximize current targeting accuracy and minimize off-target activation¹.
Supports all standard tES protocols
Supports all standard tES protocols

Supports all standard tES protocols

Design study protocols using transcranial direct, alternating, or pulsed current stimulation (tDCS, tACS, or tPCS, respectively), transcranial random noise stimulation (tRNS), or any combinations thereof. View anodal and cathodal electrodes and the magnitude of current modulation at each brain region in real time.
Rotate or change configuration
Rotate or change configuration

Rotate or change configuration

Mimic traditional two patch electrode configuration or ring electrode configurations using GTEN, or model custom electrode montages with our high fidelity head models to determine which areas of the brain receive stimulation.
Automatic montage selection
Automatic montage selection

Automatic montage selection

Smart targeting algorithms automatically determine the optimal electrode montage for stimulating any given cortical region, whether manually selected or discovered via source localization from HD EEG data collected with the same net.
Manual montage customization
Manual montage customization

Manual montage customization

Whether manual creation of electrode montage is preferred or whether you are looking to replicate the stimulation paradigms of other researchers, GTEN is up to the task.
  • 1. P. Luu et al., “Slow-Frequency Pulsed Transcranial Electrical Stimulation for Modulation of Cortical Plasticity Based on Reciprocity Targeting with Precision Electrical Head Modeling,” Front Hum Neurosci, vol. 10, p. 377, 2016.
  • 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. Philips makes no representation of the suitability of the instrument for any particular research study.