  Individuals with severe paralysis require hands-free interfaces to control
assistive devices that can improve their quality of life. We present
ChinMotion, an interface that noninvasively harnesses preserved chin, lip and
tongue sensorimotor function after tetraplegia to convey intuitive control
commands. After two hours of practice, ChinMotion enables superior
point-and-click performance over existing interfaces and it facilitates
accurate 3D control of a virtual robotic arm.
