Clinical reference

EEG & qEEG

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77 terms
4 entries · Artifacts
Artifacts

ECG and pulse artifact

Electrical cardiac contamination and mechanical pulse artifact are different phenomena.

Criteria & assessment

  • Compare timing with an ECG channel before asserting cardiac coupling.

Editorial draft · clinical review pending

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Artifacts

Electrode and environmental artifacts

Noncerebral signals can imitate slow waves, sharp transients or rhythmic activity.

Criteria & assessment

  • Inspect electrode field, frequency, onset/decay, filters and external timing.

Editorial draft · clinical review pending

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Artifacts

Muscle and chewing artifact

Muscle activity can introduce fast activity and contaminate spectral trends.

Criteria & assessment

  • Compare spatial distribution and raw waveform with high-frequency power.

Editorial draft · clinical review pending

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Artifacts

Ocular artifact

Eye-generated potentials with a characteristic frontal field.

Criteria & assessment

  • Distinguish vertical blinks from opposed lateral fields; document EOG or behavior when available.

Editorial draft · clinical review pending

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