First Demonstration of Functional Task Performance Using a Sonomyographic Prosthesis: A Case Study.

ABSTRACT: Ultrasound-based sensing of muscle deformation, known as sonomyography, has shown promise for accurately classifying the intended hand grasps of individuals with upper limb loss in offline settings. Building upon this previous work, we present the first demonstration of real-time prosthetic hand control using sonomyography to perform functional tasks. An individual with congenital bilateral limb absence was fitted with sockets containing a low-profile ultrasound transducer placed over forearm muscle tissue in the residual limbs. A classifier was trained using linear discriminant analysis to recognize ultrasound images of muscle contractions for three discrete hand configurations (rest, tripod grasp, index finger point) under a variety of arm positions designed to cover the reachable worksp

SUBMITTER: Engdahl SM 

PROVIDER: S-EPMC9114778 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature