title: Simultaneous, proportional, multi-axis prosthesis control using multichannel surface EMG.
abstract: Most upper limb prosthesis controllers only allow the individual selection and control of single joints of the limb. The main limiting factor for simultaneous multi-joint control is usually the availability of reliable independent control signals that can intuitively be used. In this paper, a novel method is presented for extraction of individual muscle source signals from surface EMG array recordings, based on EMG energy orthonormalization along principle movement vectors. In cases where independently-controllable muscles are present in residual limbs, this method can be used to provide simultaneous, multi-axis, proportional control of prosthetic systems. Initial results are presented for simultaneous control of wrist rotation, wrist flexion/extension, and grip open/close for two intact subjects under both isometric and non-isometric conditions and for one subject with transradial amputation.
authors.affiliation: Ripple LLC, Salt Lake City, UT 84105 USA. dimitri@rppl.com
authors.forename: Dimitri
authors.initials: D
authors.lastname: Yatsenko
authors.forename: Daniel
authors.initials: D
authors.lastname: McDonnall
authors.forename: K Shane
authors.initials: KS
authors.lastname: Guillory
mesh_terms: D000200:Action Potentials / Q000502:physiology*; D000674:Amputees / Q000534:rehabilitation*; D001185:Artificial Intelligence; D004576:Electromyography / Q000295:instrumentation / Q000379:methods*; D019544:Equipment Failure Analysis; D006801:Humans; D007595:Joint Prosthesis; D009119:Muscle Contraction / Q000502:physiology*; D010363:Pattern Recognition, Automated / Q000379:methods*; D011474:Prosthesis Design; D013647:Task Performance and Analysis; D013813:Therapy, Computer-Assisted / Q000379:methods