Brain-machine interface system with noise reduction method and its control method

摘要

PROBLEM TO BE SOLVED: To provide possibility of BMI control over a long term even to a patient whose intensity of brain wave is attenuated following to progress of a disease.SOLUTION: An intracorporeal device 1 is embedded in a living body 300. N pieces of electrode groups 2 (N is 2 or larger number) acquire a brain wave signal of the living body 300. A control part 6 selectively executes any of a normal operation mode and a noise reduction operation mode. In the normal operation mode, the control part 6 inputs the brain wave signal which is acquired through the N pieces of electrode groups 2 to an amplification element group 3 so that one electrode and one amplification element are associated, for causing a communication part 5 to wirelessly send N pieces of amplification brain wave signals. In the noise reduction operation mode, the control part 6 inputs the brain wave signal which is acquired through M pieces of electrode groups 2, M being smaller than N, to the amplification element group 3 so that one electrode and plural amplification elements are associated, for causing the communication part 5 to wirelessly send M pieces of amplification brain wave signals.SELECTED DRAWING: Figure 1