Tuesday, April 03, 2012

EEG Frequency Bands

EEG waveforms are generally classified according to their frequency, amplitude and shape, as well as the location on the scalp at which they are recorded: 

  • 0.5 - 3   Hz: Delta  = Deep Sleep
  •    4 - 7   Hz: Theta = Light Sleep
  •    8 - 13 Hz: Alpha = Awake and Relaxed
  •  14 - 30 Hz: Beta   = Awake and Excited

The next table shows the location and state associated to the most familiar classification used for EEG waveform frequency.

For more informations about BCI/EEG press here.


  1. Hi. Do you mind if I use the information from your chart in the introduction of my thesis? If you don't mind, how can I reference you?

  2. Hi Luke. There is no problem.
    Go ahead! :-)