The closed-loop human eye-brain-hand to computer (EBH-C) interface for hand sensory-motor coordination based on force tablet

The mechanism of the sensory-to-motor transformation as well as motor-to-sensory transformation of human beings has attracted much attention in recent years. As no efficient device can record hand intrinsic behavior, it is difficult to get its neuro-physiological models of sensory-motor coordination. In this paper, we offer a system to acquire the kinematics and kinetics information of human hand movement through handwriting. Joined with human being, an eye-brain-hand to computer (EBH-C) interaction system is presented. In this human-in-the-loop-testing system, human beings acquire image, voice or text from computer by eyes or ears then write them down. The core part of the system, named as F-Tablet/spl trade/ is able to acquire the trajectory and three-axis forces of pen-tip directly and simultaneously. With the help of this system, we designed an experiment to evaluate the handwriting movements and forces controlling ability of different ages. Some experiment results were present. Aided with conventional analysis of electroencephalography (EEG) and magnetoencephalography (MEG), the whole procedures of information transmitting, acquired by eyes and ears, processed by brain, outputted and actuated by hand, can be recorded.