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Chronic Continuous Electroencephalogram (EEG) not Requiring Electrode Maintenance

Researchers at Duke University have developed a new solution to the existing problems of measuring EEG with electrodes. The common method of acquiring the measurement is to place an array of electrodes around the head. The array may either be sown into a cap or affixed directly to the skin. Amplifiers are connected to the electrodes to capture the minute voltages induced on the electrodes by the activity of the brain. The electrodes perform unsatisfactorily in many environments. For short term situations, such as a day or two in an Intensive Care Unit, electrodes that are attached to the skin may peel away and an expensive specialist must be summoned to reattach the electrodes. For medium term situations, such as a week of collecting data from an epileptic patient, the electrode cap does not remain precisely located on the head, does not receive brain signals well, and is unsightly. For long-term situations, such as several months or years of communicating with a paralyzed patient via EEGs, the electrode cap is a burden to maintain especially in an institutional setting such as a Nursing Home. This invention measures EEGs continuously for any desired time period. The electrodes will remain correctly located and are cosmetically unobtrusive.

Duke File (IDF) Number



  • Jochum, Thomas

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Pratt School of Engineering