EEG Frequencies and Electrode Names

F-frontal

T-temporal

P-parietal

C-Central

O-occipital

Delta: 0 to <4Hz

Theta: 4 to 8Hz

Alpha: 8 to 13Hz

Beta: >13Hz

Although Delta Waves range from 0Hz to 4Hz, the normal EGG waves’ lowest frequency can only be 0.5Hz. Similarly, Beta waves are known to be >13Hz, but EEG waves that are not considered abnormal do not exceed 30 or 40Hz.