Determination of the arm orientation for brain-machine interface prosthetics

Controlling prosthetics with brain-machine interface would soon become the most natural way to restore limb function to those who suffer from neurodegenerative disease or injury. Here, we first discuss the development of neural signal processing systems for brain-machine interfaces which provide control within the Cartesian (extrinsic) frames of motion. Then we justify the development of systems that provide control using the kinematic (intrinsic) frames of motion of the manipulator prosthetic device. An experiment to create a general model of natural arm motion is presented, along with its prosthetic application to brain-machine interfaces.