Patent Document ID: 5474082
Application ID: 08001096
Patent Flag: 1

Claim One:
1. A method for controlling at least two functions of a device in response to EEG biopotentials produced by brain activity in a user and EMG biopotentials produced by muscle activity in the user, the method comprising the steps of: detecting the EEG and EMG biopotentials; selecting at least two reference frequencies within a predetermined range of selectable frequencies; producing in response to the EEG and EMG biopotentials, a single input signal representing an aggregate of the EEG and EMG biopotentials, said single input signal changing as a function of changes in either the EEG or the EMG biopotentials; generating at least two control signals in response to said reference frequencies and said single input signal, each of said control signals being associated with one of said reference frequencies and changing as a function of changes in either the EEG or the EMG biopotentials; presenting representations of said at least two control signals to the user to enable the user to sense changes in each of said control signals as a function of changes in the brain and muscle activity; and controlling the at least two functions of the device in response to the changes in each of said control signals, each of the at least two functions being controlled by one of the control signals.