title: Two-dimensional cursor-to-target control from single muscle site sEMG signals.
abstract: In this study, human subjects achieve two-dimensional cursor-to-target control using the surface electromyogram (sEMG) from a single muscle site. The X-coordinate and the Y-coordinate of the computer cursor were simultaneously controlled by the active manipulation of power within two frequency bands of the sEMG power-spectrum. Success of the method depends on the sEMG frequency bandwidths and their midpoints. We acquired the sEMG signals at a single facial muscle site of four able-bodied subjects and trained them, by visual feedback, to control the position of the cursor. After training, all four subjects were able to simultaneously control the X and Y positions of the cursor to accurately and consistently hit three widely-separated targets on a computer screen. This technology has potential application in a wide variety of human-machine interfaces to assistive technologies.
authors.affiliation: Department of Biomedical Engineering, University of California, Davis, CA 95616, USA.
authors.forename: Claudia
authors.initials: C
authors.lastname: Perez-Maldonado
authors.forename: Anthony S
authors.initials: AS
authors.lastname: Wexler
authors.forename: Sanjay S
authors.initials: SS
authors.lastname: Joshi
mesh_terms: D000328:Adult; D003626:Data Display; D004566:Electrodes; D004576:Electromyography / Q000295:instrumentation*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000502:physiology*; D012815:Signal Processing, Computer-Assisted; D014584:User-Computer Interface; D055815:Young Adult