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Artifacts in EEG - Recognition and differentiation
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Artifacts in EEG - Recognition and differentiation

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This Presentation discusses the variously commonly seen artifacts in EEG, and how to recognize them. In EEG interpretation, it is often more important to identify an artifact than to identify true …

This Presentation discusses the variously commonly seen artifacts in EEG, and how to recognize them. In EEG interpretation, it is often more important to identify an artifact than to identify true pathology. Once all the artifacts are ruled out, one is sure that what one is dealing with represents disease/abnormality


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  • 1. Artifacts in EEG Dr. Rahul Kumar
  • 2. Recording EEG     EPSP at apical dentritic trees of pyramid cells Dentritic membrane  depolarized Potential difference cause a current  flow through volume conductor from the nonexited membrane of the soma to the apical dentritic tree Extracellular currents = secondary / volume currents
  • 3. The EEG machine  8 – 64 identical channels recording simultaneously from as many different pairs of electrodes  Electrodes & electrode board Amplifiers Filters Pen & chartdrive (screen)   
  • 4. Artifacts Physiologic artifacts     Eye movement Muscle activity ECG artifacts Skin artifacts Extraphysiologic artifacts    Electrodes Alternating current (60 Hz) artifact Movements in the enviroment
  • 5. Photomyoclonic Response
  • 6. NHIỄ U (ARTIFACTS)
  • 7. NHIỄ U (ARTIFACTS)
  • 8. NHIỄ U (ARTIFACTS)
  • 9. NHIỄ U (ARTIFACTS)
  • 10. NHIỄ U (ARTIFACTS)
  • 11. SUMMARY
  • 12. Artefacts in EEG Recordings
  • 13. Artefacts in EEG Recordings
  • 14. Artefacts in EEG Recordings