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EEG Frequency Bands

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Created on February 27, 2023

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Transcript

EEG Frequency Bands

delta

theta

beta

alpha

0-4 Hz Present in Stage 3 and 4 nonREM sleep Pathological if seen during wakefulness

4-8 Hz Prominent in drowsy individuals Pathological if seen during wakefulness

12-30 Hz Prominent in awake and alert individuals Mainly seen in frontal lobe

8-12 Hz Prominent in awake individuals with eyes closed Mainly seen in occipital lobe