In this study, the thickness deformation of the forearm extensor muscle was taken from ultrasound images during wrist extension-flexion; we call this process sonomyography (SMG). SMG provides an alternative signal source for prosthetic control with proprioception. The fast block-matching algorithm was used to track the thickness deformation and then the opening and closing of the prosthetic fingers were controlled according to the thickness deformation SMG in real time. We expect that SMG could be used together with electromyography to provide more accurate prosthetic control. Our work will contribute to human rehabilitation engineering for persons with upper-limb loss.
Volume 47 Number 2, 2010
Pages 87 — 98