http://www.electropsychology.com/valovi.gifhttp://www.electropsychology.com/valovi.gif, http://en.wikipedia.org/wiki/Electroencephalography 8-12 Hz (awake, but relaxed, attenuated w/ activity) mu alpha having to do w/ motion 12-30 Hz (Low amplitude w/ multiple/varying freq when thinking) up to 3 Hz (sleep and babies) 4-7 Hz (kids and meditation) 26-100 Hz raw EEG
http://www.pnas.org/content/suppl/2004/12 /07/0403504101.DC1/03504Movie1.movhttp://www.pnas.org/content/suppl/2004/12 /07/0403504101.DC1/03504Movie1.mov Movie 1. Two-dimensional cursor control with scalp-recorded sensorimotor rhythms. In this QUICKTIME movie, a person with spinal cord injury (i.e., user A) uses scalp-recorded sensorimotor rhythms to control cursor movement in two dimensions. In each trial, a target appears at one of eight possible locations on the periphery of the screen, and 1 sec later, the cursor appears in the center and moves. Its vertical movement is controlled by the sum of the weighted amplitudes of a 24-Hz beta rhythm recorded from the scalp over left and right sensorimotor cortices, and its horizontal movement is controlled by the difference between the weighted amplitudes of a 12-Hz mu rhythm recorded over left and right sensorimotor cortices, as described in Methods.