GeoSource™ 3 electrical source imaging packages
The culmination of 25 years of interdisciplinary research, GeoSource 3 Research software leverages
• High Density EEG technology
• high-resolution MRI imaging
• sophisticated electric head modeling
• accelerated computing
to create a powerful platform for electrical source imaging for advanced research applications.
New with GeoSource 3.1 Research packages
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The science behind GeoSource 3 source imaging and GTEN 100 Neuromodulation
See a list of representative publications using GeoSource electrical source imaging software
GeoSource 3 Research software is for research use only. However, every GeoSource 3 Research Package also includes the clinically cleared GeoSource 2.0 software for laboratories or clinics requiring both options.
Now with individual head models
GeoSource 3 Research electrical source imaging method improves on current ESI methodology by using High Density EEG data and much more realistic head models to define the path of electrical current from the cortex to the scalp.
Higher resolution with High Density EEG data
To provide the best source imaging results, GeoSource 3 software uses High Density EEG data with up to 256 sensors and whole head coverage.
More realistic head models with 7 different tissue types
Automated software characterizes tissue types — scalp, skull, cerebrospinal fluid, grey matter, white matter, air, and eyeballs — directly from 1-mm MRI data for the most realistic anatomy across the entire head.
More realistic electrical conductivity modeling
using the Finite Difference Method (FDM)
The FDM performs voxel-by-voxel calculations of the electric potentials, maintaining the high resolution geometry of the original MRI image.
Fast and easy step-by-step head model building
A dedicated pipeline software guides you through each step with opportunities to review the model at all stages of construction.
The FDM software is optimized for high-performance computing and is performed using a high-performance GPU compute node (included with Intermediate and Advanced Packages) so that computing time is accelerated from days to minutes.
Sensor Registration for higher accuracy
Conformal and individual head models incorporate EEG sensor location to define the path of electrical current from the cortex to the scalp, a critical component for the most accurate source estimation.
Use the Geodesic Photogrammetry System with sensor digitization from whole-head photographs or the GeoScan Sensor Digitization Device for real-time digitization using an optical scanner.
Choose from three different packages,
depending on your research needs.
All packages include
- LORETA, sLORETA, and LAURA source estimation algorithms
- FDM head models built from 1-mm resolution
MRI data
Build individual head models with GeoSource 3 Research ADVANCED Package
Import MRI scans to build individual head models for the most realistic brain anatomy.
No individual MRI data?
| GeoSource 3 Research software is seamlessly integrated with EGI’s GTEN 100 Neuromodulation System, for fully informed dense array neuromodulation protocols. |
Use atlas head models included in the BASIC package
Includes built-in age and gender specific head models —
1 infant, 2 pediatric, and 3 adult
Build individualized atlas head models with the INTERMEDIATE package
Use digitized sensor positions to conform/warp an atlas head model to individual head geometry (requires sensor digitization device).
| GeoSource 3 Research Packages | Advanced Package | Intermediate Package | Basic Package |
| Source Estimation Software |  |
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| FDM atlas electric head models | |
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| Software module for building conformal/warped FDM head models using sensor position data* | |
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| High performance GPU compute node for building FDM head models | |
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| Software for importing MRI DICOM data | |
*Requires the Geodesic Photogrammetry System or the GeoScan Sensor Digitization Device.
Related products
Geodesic EEG System™ (GES) 400, 405, or 410 - for High Density EEG acquisition, review, and analysis using Net Station 5 software.
Geodesic Sensor Nets - Fast-application electrode nets with 32, 64, 128, or 256 channels for whole head, High Density EEG
Geodesic Photogrammetry System™ (GPS) and GeoScan™ Sensor Digitization Device - complete hardware and software packages for digitizing the sensor positions. (The GeoScan product is for research use only.)
GTEN™ 100 Research Conversion Package - for dense array neuromodulation integrated with source estimation (for research use only).
GeoSource, Geodesic EEG, Geodesic Photogrammetry System, GeoScan, GES, GTEN, Geodesic Sensor Net, and Net Station are trademarks of Electrical Geodesics, Inc.
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.