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
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