title: An SEMG computer interface using three myoelectric sites for proportional two-dimensional cursor motion control and clicking for individuals with spinal cord injuries.
abstract: We developed an alternative computer interface using surface electromyography (sEMG) for individuals with spinal cord injuries (SCI) to access a computer. We designed this interface to make a cursor move on a two-dimensional screen and to click using only three muscles for each subject. In addition, a user can voluntarily control cursor movement speed by modulating muscle contraction levels. Three SCI patients and 10 healthy subjects volunteered to evaluate the performance of this interface using Fitts' law test in a two-dimensional testing setup. The throughputs (TP) of our interface were 0.1962±0.0562 b/s for the SCI patients and 0.4356±0.0706 b/s for the healthy subjects. This interface could help SCI patients handle a wider range of activities such as browsing the Internet and communicating with others.
authors.affiliation: Future IT Research Center, Samsung Advanced Institute of Technology, Yongin, Republic of Korea.
authors.forename: Changmok
authors.initials: C
authors.lastname: Choi
authors.forename: Youngjin
authors.initials: Y
authors.lastname: Na
authors.forename: Byeongcheol
authors.initials: B
authors.lastname: Rim
authors.forename: Youngkyung
authors.initials: Y
authors.lastname: Kim
authors.forename: Sangkuk
authors.initials: S
authors.lastname: Kang
authors.forename: Jung
authors.initials: J
authors.lastname: Kim
mesh_terms: D004576:Electromyography / Q000295:instrumentation*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009038:Motion; D009119:Muscle Contraction; D012815:Signal Processing, Computer-Assisted; D013119:Spinal Cord Injuries / Q000503:physiopathology*; D014584:User-Computer Interface