Method and brain computer interface for processing a brain wave signal (14) obtained from a person using a brain wave detector (5). One or more stimuli are applied to the person which each comprise a pseudo random noise component (11a, 11b). A brain wave signal (14) is detected and mental processing of the one or more stimuli (11a, 11b) is tracked by correlating the pseudo random noise component and the brain wave signal.
METHOD FOR PROCESSING A BRAIN WAVE SIGNAL AND BRAIN COMPUTER INTERFACE