To improve the accuracy of control on devices using brain signals, for example, robot arm control.SOLUTION: The double closed circuit brain-machine interface includes: a stage S320 of generating motion information based on a motion intention and generating a control signal for controlling an external device when a brain signal corresponding to the motion intention of a user is sensed; a stage S326 of acquiring a sensory signal corresponding to an operation state of the external device and analyzing the sensory signal to obtain a brain stimulation pattern for enabling the user to recognize the operation state of the external device; and a stage S340 of analyzing the motion intention brain signal to generate information on a brain stimulation frequency which stimulates a brain region of the user, correcting the brain stimulation pattern using the information on the brain stimulation frequency, and giving assistance by referring to the corrected brain stimulation pattern to stimulate the brain region through the brain stimulated region.SELECTED DRAWING: Figure 3
DOUBLE CLOSED CIRCUIT BRAIN-MACHINE INTERFACE SYSTEM AND METHOD THEREFOR