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PubMed · 8550064

Multichannel PC-based data-acquisition system for high-resolution EEG.

W J Dunseath·E F Kelly
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Abstract

This paper describes a complete, high-performance data-acquisition system for high-resolution EEG. The system includes preamplified EEG electrodes, rigid helmets, differential instrumentation and software-controlled gain amplifiers, digitizing and control circuitry, and optical coupling to a 486 PC. Miniaturized preamplifiers mounted on individual electrodes reduce coupling to external electromagnetic fields and minimize signal distortion caused by increased and/or imbalanced electrode impedances. Electrodes are applied quickly and with minimal skin preparation, yet with high packing densities and repositioning consistent to about 1-3 mm in repeated applications. Extensive testing under realistic conditions demonstrates that the system provides superior electrical performance compared to currently available commercial systems.

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Analog-Digital ConversionCalibrationElectrodesElectroencephalographyElectronics, MedicalEquipment DesignHumansMicrocomputersSignal Processing, Computer-AssistedJournal ArticleResearch Support, U.S. Gov't, Non-P.H.S.Research Support, U.S. Gov't, P.H.S.

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W J Dunseath, E F Kelly. 1995. Multichannel PC-based data-acquisition system for high-resolution EEG.. https://doi.org/10.1109/10.476129

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