Doctors Are Using a New Device Called a Geodesic Sensor Net to Map the Location of Seizures Suffered by Epilepsy Patients
EGI's HydroCel Geodesic Sensor Net
Superior Patient Comfort
In study after study, patients report that they prefer EEGs performed with Geodesic Sensor Nets over conventional EEG sensor arrays. Patients report that the GSN is more comfortable than other EEG methods. Children are far less likely to cry because the process is rapid and abrasion-free. Patients also comment that the electrolyte formulation does not smell or damage their hair.
Superior Patient Safety
Quick Application Time
Complete Head Coverage
The first aspect of complete head coverage refers to the intersensor distance (that is, how far apart one sensor is from another sensor). Smaller intersensor distances translate to a more accurate measurement of the voltage field.
The second aspect refers to coverage of the underside of the head (for example, below the ears, including the face). It is common to believe that electrodes on the inferior surface of the head do not pick up EEG. However, voltage fields generated by the brain are volume conducted throughout the entire head. Moreover, certain brain regions, such as the inferior temporal lobes and ventral aspects of the frontal lobe, are oriented such that the voltage fields generated by these brain regions are best detected by electrodes on the inferior surface of the head.
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Sperli, F., Spinelli, L., Seeck, M., Kurian, M., Michel, C. M., & Lantz, G. (2006). EEG source imaging in pediatric epilepsy surgery: A new perspective in presurgical workup. Epilepsia, 47, 1-10.
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