| Artifact in Electroencephalography |
| Oh-Young Kwon |
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| Copyright © 2003 The Korean Society of Clinical Neurophysiology |
| This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium,
provided the original work is properly cited. |
| ABSTRACT |
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Artifacts in an electroencephalography are the signals not originated in the cerebrum. Generally, the artifacts are categorized into physiological artifacts and nonphysiological artifacts. An artifact created in the generator existing in the body but not originated in the brain is physiological and an artifact occurred by various causes existing outside of the body is nonphysiological. The physiological artifacts are occurred by eyeball movement, electrocardiogram, tongue movement, skin potential and body movement, and the nonphysiological artifacts by instrument, electrode, environment and digital signal defect. To recognize and eliminate the artifacts caused by various origins is responsibility of the EEG technician primarily. However even an EEG technician abundant in experiences cannot remove all artifacts. The EEG technician must give information about the artifacts which he/she was not able to remove after endeavoring to the EEG interpreter. The responsibility about the quality control of EEG is fundamentally on the EEG interpreter. The EEG interpreter must accumulate the knowledge about artifacts abundantly to advise the EEG technician to correct frequently occurred artifacts and to determine the artifacts recorded in the EEG correctly. |
| Key words:
Artifacts, Electroencephalography, Physiological, Nonphysiological |
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