Artifacts in EEG
Dr. Rahul Kumar
Recording EEG






EPSP at apical dentritic trees
of pyramid cells
Dentritic membrane 
depolarized
Potential differe...
The EEG machine


8 – 64 identical channels
recording simultaneously
from as many different pairs
of electrodes



Elect...
Artifacts
Physiologic artifacts





Eye movement
Muscle activity
ECG artifacts
Skin artifacts

Extraphysiologic artif...
Photomyoclonic Response
NHIỄ U (ARTIFACTS)
NHIỄ U (ARTIFACTS)
NHIỄ U (ARTIFACTS)
NHIỄ U (ARTIFACTS)
NHIỄ U (ARTIFACTS)
SUMMARY
Artefacts in EEG Recordings
Artefacts in EEG Recordings
Artefacts in EEG Recordings
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
Artifacts in EEG - Recognition and differentiation
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 pathology. Once all the artifacts are ruled out, one is sure that what one is dealing with represents disease/abnormality

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Artifacts in EEG - Recognition and differentiation

  1. 1. Artifacts in EEG Dr. Rahul Kumar
  2. 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. 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. 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. 5. Photomyoclonic Response
  6. 6. NHIỄ U (ARTIFACTS)
  7. 7. NHIỄ U (ARTIFACTS)
  8. 8. NHIỄ U (ARTIFACTS)
  9. 9. NHIỄ U (ARTIFACTS)
  10. 10. NHIỄ U (ARTIFACTS)
  11. 11. SUMMARY
  12. 12. Artefacts in EEG Recordings
  13. 13. Artefacts in EEG Recordings
  14. 14. Artefacts in EEG Recordings
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