Summary
As computerized EEG (CEEG) analysis and display methods become increasingly powerful the user is lured toward increasingly abstract representations of data in which artifacts can easily go unrecogniaed. The presence of even small amounts of artifact can lead to distortion of CEEG results dur to the sensitivity of the analysis methods employed. Several common artifacts are discussed, their distortion of CEEG data illustrated, and remedial measures suggested. Some of these artivacts (EOG, EMG, photomyoclonic, tremor, ECG, 60 Hz, volume conducted cortical activity) are familiar to traditional EEG (aliasing, extrapolation) are unique to CEEG and may be inadvertantly introduced by worrkers not specificall trained in CEEG methods.
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This work was supported by CRC grant 2-40227 from Southern Illinois University to Dr. Coburn.
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Coburn, K.L., Moreno, M.A. Facts and artifacts in brain electrical activity mapping. Brain Topogr 1, 37–45 (1988). https://doi.org/10.1007/BF01129338
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DOI: https://doi.org/10.1007/BF01129338