Brain-body actuated system

A method of controlling a device in response to biopotentials produced by an eye glance gesture made by a user comprising:

• detecting biopotentials at a location on a user;
• filtering the biopotentials with a low frequency bandpass filter to produce low frequency signals;
• detecting the low frequency signals moving in a first direction and exceeding a first threshold;
• detecting in response to the low frequency signals exceeding the first threshold, the low frequency signals moving in an opposite direction and exceeding a second threshold;
• detecting in response to the low frequency signals exceeding the second threshold, the low frequency signals moving in the first direction and exceeding a third threshold;
• and
• providing a control signal identifying an eye glance gesture being made by the user in response to low frequency signals exceeding the third threshold.

A method of controlling a device in response to biopotentials produced by a short eye brow lift gesture made by a user comprising:

• detecting biopotentials at a location on a user;
• filtering the biopotentials with a high frequency bandpass filter to produce high frequency signals in a bandwidth of from approximately 70 Hz to approximately 3000 Hz;
• detecting the high frequency signals moving in a first direction and exceeding a first threshold;
• detecting in response to the high frequency signals exceeding the first threshold, the high frequency signals moving in an opposite direction and dropping below the first threshold;
• measuring the time that the high frequency signals continuously exceed the first threshold;
• measuring the time that the high frequency signals are continuously below the first threshold;
• and
• providing a control signal identifying a short eye brow lift being made by the user in response to the high frequency signals continuously exceeding the first threshold for a first period of time, and the high frequency signals being below the first threshold for a second period of time.

A method of controlling a cursor in a video display in response to biopotentials produced by gestures made by a user comprising:

• detecting biopotentials at a location on a user;
• filtering the biopotentials to produce frequency signals;
• analyzing the frequency signals to provide a control signal representing a first frequency bandwidth;
• and
• initiating motion of the cursor in a first direction in response to the control signal being below a magnitude threshold for a period of time determinable by the user.