title: Decoding of individuated finger movements using surface electromyography.
abstract: Upper limb prostheses are increasingly resembling the limbs they seek to replace in both form and functionality, including the design and development of multifingered hands and wrists. Hence, it becomes necessary to control large numbers of degrees of freedom (DOFs), required for individuated finger movements, preferably using noninvasive signals. While existing control paradigms are typically used to drive a single-DOF hook-based configurations, dexterous tasks such as individual finger movements would require more elaborate control schemes. We show that it is possible to decode individual flexion and extension movements of each finger (ten movements) with greater than 90% accuracy in a transradial amputee using only noninvasive surface myoelectric signals. Further, comparison of decoding accuracy from a transradial amputee and able-bodied subjects shows no statistically significant difference ( p < 0.05) between these subjects. These results are encouraging for the development of real-time control strategies based on the surface myoelectric signal to control dexterous prosthetic hands.
authors.affiliation: Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, MD 21218, USA. francesco.tenore@jhuapl.edu
authors.forename: Francesco V G
authors.initials: FV
authors.lastname: Tenore
authors.forename: Ander
authors.initials: A
authors.lastname: Ramos
authors.forename: Amir
authors.initials: A
authors.lastname: Fahmy
authors.forename: Soumyadipta
authors.initials: S
authors.lastname: Acharya
authors.forename: Ralph
authors.initials: R
authors.lastname: Etienne-Cummings
authors.forename: Nitish V
authors.initials: NV
authors.lastname: Thakor
mesh_terms: D000465:Algorithms; D000674:Amputees; D004576:Electromyography / Q000379:methods*; D005260:Female; D005385:Fingers / Q000502:physiology*; D005542:Forearm / Q000502:physiology; D006801:Humans; D008297:Male; D009068:Movement / Q000502:physiology*; D016571:Neural Networks, Computer; D012815:Signal Processing, Computer-Assisted; D018709:Statistics, Nonparametric