Extraction of the Electric Fields of the Brain in a Noisy Environment
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2005-Jan-29
Disclosed is a method for separating desired frequencies emanated by the human brain from an electrically noisy environment. The minute energy contained in the electric field generated by the Sensorimotor Rhythm (SMR) is very small compared to the normal electrical environment, which may be several orders of magnitude larger. The extraction of the desired signal from such a harsh environment depends upon a device's ability to select the SMR's characteristic frequency (8-12 Hz) in a 2-Hertz bandwidth and to reject unwanted signals.