advantages in application to motor learning, 471, 472 for communication and environmental control, 464, 467 intervention and motor recovery, 470, 471 limitations in application to motor learning, 471 motor learning application, 466, 467, 468 self-paced, 262 signal control accuracy, 468, 469, 470 theoretical models of motor learning, 466, 467 using attempted and imagined movements, 468, 469 Brain-machine interface(s), 268; see also Brain-computer interface Brain-to-machine interfaces (BMIs), 338 Brain neural to machine interface (BNMIs),