Alpha peak frequency is the dominant frequency in the range. For example, if you looked at bars on the power spectrum in the alpha range, the bar that was tallest would be the peak frequency. This is another way of looking at level of activation. Alpha peak frequency should be around 10Hz (especially in the front) in most adults. Lower peak frequencies indicate EEG slowing with the problems related to that (language and attention difficulties, depression, etc.); higher peak frequencies […]