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. 2018 Dec 17;19(3):74–82. doi: 10.1016/j.bjae.2018.11.002

Table 1.

EEG waveforms in the healthy adult population. (Not to scale, in general terms lower frequency activity is higher in amplitude and vice versa.).

Wave form Frequency (Hz) Location Morphology (1s)
Gamma >30 Somatosensory cortex Image 1
Beta 13–30 Frontal Image 2
Alpha 8–13 Occipital Image 3
Theta 4–8 Diffuse Image 4
Delta <4 Diffuse Image 5