What Electrical Geodesics does

Electrical Geodesics, Inc. (EGI), operating under the brand Magstim EGI, is a privately held medical technology company founded in 1992 and headquartered in Eugene, Oregon. The company designs and sells high-density EEG systems built around its proprietary HydroCel and MicroCel geodesic sensor nets (available in 32-, 64-, 128-, and 256-channel configurations) and its NA 400 amplifier platform, which uses ≥1.0 GΩ input impedance to enable no-abrasion scalp electrode recording. EGI serves two primary customer segments: academic and clinical neuroscience research institutions (including those running ERP, cognitive neuroscience, and EEG-fMRI/-TMS studies) and healthcare/clinical facilities performing routine EEG, long-term monitoring, and FDA-cleared clinical source estimation, with a secondary segment in transcranial neuromodulation researchers using the GTEN product line.

The product stack integrates hardware (GES 300, GES 400, GES 400 MR, GES 500 series amplifiers; Photic Stimulator; Physio 16 polygraphic acquisition; Geodesic Photogrammetry System) with proprietary software (Net Station 5.x for EEG acquisition on macOS, GeoSource 2.0 as the FDA-cleared and Medical CE-cleared clinical source estimation module, and GeoSource 3.1 Research in Basic, Intermediate, and Advanced tiers). The Amp Server Pro SDK exposes real-time EEG streaming for brain-computer interface developers, and the platform is integrated with E-Prime, EEGLAB, BESA, BrainVision, MATLAB, SR Research/Tobii eye-tracking, Chronos, and Osirix MD.

EGI monetizes through quote-based direct enterprise sales of configured hardware systems plus software licenses and recurring support/training services, on multi-year contracts without public list pricing. Distribution is exclusively direct ([email protected], +1.541.687.7962), with no channel partners or resellers, and reach extends worldwide subject to country-level regulatory restrictions. The company employs 51–100 staff and is founder/management-controlled, with Don Tucker, PhD serving as CEO and Ann Bunnenberg as Co-Founder/COO; investor and media contact lists suggest an affiliation with UK-based Magstim (a transcranial magnetic stimulation manufacturer) under the Magstim EGI combined brand.

Name

Electrical Geodesics

Legal name

Electrical Geodesics, Inc.

Website

https://egi.com

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

51–100 employees

Short description

Electrical Geodesics (Magstim EGI) designs and sells high-density EEG hardware (GES 400/500 series, geodesic sensor nets up to 256 channels) and source estimation software (Net Station, FDA-cleared GeoSource) for neuroscience research institutions and clinical neurodiagnostic facilities, distributed via direct enterprise sales worldwide.

Ownership category

akta.pro rank

Product category

Neurodiagnostic Equipment

NAICS

Electromedical and Electrotherapeutic Apparatus Manufacturing (334510)

SIC

Electromedical & Electrotherapeutic Apparatus (3845)

akta.pro primary industry

Neurological Monitoring (EEG, Seizure/Sleep/Neuro Wearables) (HLAHACAE)

Keywords

• High-density EEG systems
• Dense array EEG
• Geodesic sensor nets
• Neuroimaging software
• EEG acquisition systems

Headquarters

HQ city

Eugene

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Operations, Marketing or Sales, Supply Chain, Infrastructure

Revenue model

1. EEG Hardware Systems: Sale of Geodesic EEG Systems (GES) including amplifiers, sensor nets, and accessories. Products include GES 400, GES 400 MR, GES 300, GTEN 100, and various HydroCel/MicroCel Geodesic Sensor Nets in multiple channel configurations.
2. Software Licenses: Licensing of proprietary software including Net Station acquisition software, GeoSource source estimation software (GeoSource 2.0 clinical, GeoSource 3.1 Research in Basic/Intermediate/Advanced tiers), and E-Prime Extensions for Net Station.
3. Support and Training Services: Technical support services including Knowledge Center resources, support tickets, sensor net repairs (RMA requests), and optional onsite or virtual training.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Electrical Geodesics designs, manufactures, and sells high-density EEG systems, including Geodesic EEG Systems (GES) amplifiers, HydroCel and MicroCel geodesic sensor nets in 32-256 channel configurations, and proprietary software (Net Station for data acquisition and GeoSource for electrical source estimation). Products are configured and quoted per customer for neuroscience research laboratories and clinical neurodiagnostic facilities. The portfolio also includes GTEN transcranial electrical neuromodulation systems, photogrammetry-based sensor localization, polygraphic recording (Physio 16), and integration software for stimulus presentation (E-Prime) and brain-computer interface development.

Product overview

Electrical Geodesics (EGI) offers a comprehensive high-density EEG portfolio centered on Geodesic EEG Systems (GES) and geodesic sensor nets. The core offering includes the GES 400/500 series research platforms built on NA 400 amplifier technology, supplemented by MR-compatible variants for simultaneous imaging studies. The software ecosystem centers on Net Station 5 EEG acquisition software, GeoSource electrical source estimation (GeoSource 2.0 for clinical/cleared use, GeoSource 3.1 Research for advanced research applications), and integration with E-Prime for stimulus presentation. Sensor accessories include HydroCel and MicroCel Geodesic Sensor Nets in various channel densities (32-256 channels), alongside supporting hardware for TMS-EEG (MicroCel), polygraphic recording (Physio 16), and 3D electrode digitization (GeoScan, GPS). Transcranial neuromodulation research is supported via GTEN systems. The product portfolio integrates with third-party tools including E-Prime, MATLAB toolboxes, EEGLAB, BESA, BrainVision Analyzer, SR Research/Tobii eye-tracking, and Osirix MD for MRI processing.

Differentiator

Problem solved

Functional benefit

Products and services

• GES 500 Geodesic EEG System High-density EEG acquisition system for research and clinical applications featuring advanced amplifier technology for real-time neural data collection.
• GES 400 Geodesic EEG System High-density EEG acquisition platform built on NA 400 technology, supporting dense array EEG recording with various sensor net configurations for research and clinical environments.
• GES 400 MR (MR-Conditional EEG System) MR-conditional EEG system designed for simultaneous EEG-MRI recording environments while maintaining data quality.
• GES 300 Geodesic EEG System Previous generation Geodesic EEG System featuring Net Amps 300 amplifier with input impedance of ≥200 MΩ.
• GTEN 100 Geodesic Transcranial Electrical Neuromodulation System Transcranial electrical neuromodulation system for research use enabling transcranial electrical stimulation studies, built on NA 400 technology platform.
• GTEN 200 Geodesic Transcranial Electrical Neuromodulation System Geodesic Transcranial Electrical Neuromodulation (GTEN) 200 series system for neuromodulation research applications.
• Net Station 5 (EEG Acquisition and Analysis Software) Geodesic EEG acquisition and analysis software platform for Mac OS, supporting data collection, review, and analysis workflows (current versions 5.4 and 5.5).
• GeoSource 2.0 (Clinical Source Estimation Software) FDA-cleared (510(k)) and Medical CE cleared electrical source estimation software for clinical use, extending Net Station to visualize estimated cortical activations from EEG scalp data using distributed linear inverse techniques and atlas-based head models.
• GeoSource 3.1 Research (Source Estimation Software) Research-use electrical source estimation software with high-resolution FDM head models including 7 tissue types, available in Basic/Intermediate/Advanced tiers, supporting individual head models from patient MRI and Conformal Atlas Head Models. Includes GeoSource 2.0 license.
• HydroCel Geodesic Sensor Nets High-density geodesic sensor nets available in 32, 64, 128, and 256 channel configurations, with variants for routine monitoring (with sponges), long-term monitoring (spongeless), MR-compatible, and preterm infant applications. Uses silver/silver chloride electrodes with replaceable sponges.
• MicroCel Geodesic Sensor Nets Low-profile geodesic sensor nets designed for EEG-TMS applications, allowing the TMS coil to be positioned closer to the head, available in 32, 64, 128, and 256 channel configurations.
• Geodesic Photogrammetry System (GPS) Photogrammetry-based system for fast, accurate 3D electrode sensor localization for dense array EEG, providing individual sensor coordinate information for source estimation accuracy.
• Physio 16 Polygraphic Data Acquisition System Polygraphic data acquisition system for recording additional physiological signals alongside EEG, available in standard and MR-compatible versions.
• GeoScan 3D Electrode Position Digitizer Handheld 3D electrode position digitization device for sensor registration, exporting data in .txt, .xml, .sfp, .elp, or .nsi formats. End-of-life product with limited sales and servicing.
• Amp Server Pro SDK Software developer's kit providing real-time access to streaming EEG data, enabling external control over the amplifier for brain-computer interface (BCI) applications. Available in versions 2.1 and 3.0 with Network APIs.
• E-Prime Extensions for Net Station (EENS) Software extension enabling TCP/IP communication between E-Prime stimulus presentation software and Net Station, allowing synchronized experimental control, recording start/stop/pause, and stimulus event marking with timestamps.
• Photic Stimulator Visual stimulus presentation device for evoked potential studies, compatible with Net Station EEG systems.
• Avatar EEG (Desktop EEG Software Solution) Desktop EEG software solution including Avatar EEG Desktop Software and Avatar EEG Recorder for data collection workflows.

Quantifiable outcome

• High input impedance (≥1.0 GΩ) allows accurate signal acquisition with scalp-electrode impedances up to 200 kΩ without abrasion
• +2 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration9 records

Feature8 records

Scale indicators1 record

Recent moves6 records

Expansion highlights6 records

Emerging players

• Emotiv: Consumer/research EEG headset maker (EPOC, Insight). Competes in the broader EEG ecosystem at the lower-channel end, encroaching on portions of the research and applied neuroscience market EGI serves.
• Wearable Sensing: US-based developer of wearable, dry-electrode EEG systems and high-density sensor net products. Competes in adjacent research and applied EEG use cases where EGI's HydroCel and MicroCel nets are deployed.
• Mitsar: Russian-headquartered EEG equipment and ERP-testing solutions provider with comparable research-grade EEG amplifiers. Overlaps in clinical and research EEG markets with growing international footprint.

Broad incumbents

• Magstim: UK-based parent and leading manufacturer of transcranial magnetic stimulation (TMS) systems. As EGI's corporate parent, Magstim is the platform bundling partner and a broad incumbent in non-invasive brain stimulation.
• Cadwell Industries: US-based neurodiagnostic equipment manufacturer with Easy EEG and EEG systems for clinical use. Competes in the clinical neurology channel where EGI sells GeoSource-cleared HD-EEG.
• Natus Medical: Large US-listed neurodiagnostic company offering clinical EEG, EMG, and ICU monitoring systems (Natus/Xltek). Competes with EGI's clinical EEG footprint and benefits from broader hospital channel coverage.

Direct peers

• Compumedics / Neuroscan: Australian-listed neurodiagnostic company whose Neuroscan division produces SynAmps amplifiers and SCAN/CURRY software — a long-standing direct competitor in both research and clinical EEG, including high-density systems.
• Brain Products GmbH: German manufacturer of research-grade EEG hardware and software (actiCHamp, BrainVision Recorder). Closest direct competitor to EGI in high-density research EEG, with similar integration into MATLAB/EEGLAB/BESA ecosystems.
• ANT Neuro: Netherlands-based EEG and MEG provider (waveguard, eego, ASA software). Directly competes with EGI in high-density EEG research and clinical neurophysiology, including source estimation software.
• g.tec medical engineering: Austrian manufacturer of high-density EEG, biosignal acquisition, and brain-computer interface systems (g.USBamp, g.HEADSIGHT). Direct competitor in research and BCI applications with overlapping dense-array product positioning.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/magstimegi?lang=en
• YouTubeyoutube.com/c/MagstimCompanyLtd/featured
• LinkedInlinkedin.com/company/electrical-geodesics-inc.

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Electrical Geodesics