eMedicine World Medical Library

Excerpt from EEG Atlas: EEG Artifacts


Synonyms, Key Words, and Related Terms: electroencephalogram, electroencephalograph, electroencephalography, cerebral activity, cerebral function, muscle function, electromyogram, EMG, glossokinetic artifact, eye movement, ECG artifact, respiration artifacts, skin artifacts, electrodes, alternating current 60-Hz artifact

Please click here to view the full topic text: EEG Atlas: EEG Artifacts

Although EEG is designed to record cerebral activity, it also records electrical activities arising from sites other than the brain. The recorded activity that is not of cerebral origin is termed artifact and can be divided into physiologic and extraphysiologic artifacts. While physiologic artifacts are generated from the patient, they arise from sources other than the brain (ie, body). Extraphysiologic artifacts arise from outside the body (ie, equipment, environment).

Patient Education

For excellent patient education resources, visit eMedicine's Procedures Center. Also, see eMedicine's patient education article Electroencephalography (EEG).

Please click here to view the full topic text: EEG Atlas: EEG Artifacts

About Us | Privacy | Code of Ethics | Terms of Use | Contact Us | Advertising | Institutional Subscribers
Labelled with ICRA © 1996-2006 by WebMD.
All Rights Reserved.

Medicine is a constantly changing science and not all therapies are clearly established. New research changes drug and treatment therapies daily. The authors, editors, and publisher of this journal have used their best efforts to provide information that is up-to-date and accurate and is generally accepted within medical standards at the time of publication. However, as medical science is constantly changing and human error is always possible, the authors, editors, and publisher or any other party involved with the publication of this article do not warrant the information in this article is accurate or complete, nor are they responsible for omissions or errors in the article or for the results of using this information. The reader should confirm the information in this article from other sources prior to use. In particular, all drug doses, indications, and contraindications should be confirmed in the package insert. FULL DISCLAIMER