title: Clinical evaluation of wireless inductive tongue computer interface for control of computers and assistive devices.
abstract: Typing performance of a full alphabet keyboard and a joystick type of mouse (with on-screen keyboard) provided by a wireless integrated tongue control system (TCS) has been investigated. The speed and accuracy have been measured in a form of a throughput defining the true correct words per minute [cwpm]. Training character sequences were typed in a dedicated interface that provided visual feedback of activated sensors, a map of the alphabet associated, and the task character. Testing sentences were typed in Word, with limited visual feedback, using non-predictive typing (map of characters in alphabetic order associated to sensors) and predictive typing (LetterWise) for TCS keyboard, and non-predictive typing for TCS mouse. Two subjects participated for four and three consecutive days, respectively, two sessions per day. Maximal throughput of 2.94, 2.46, and 2.06, 1.68 [cwpm] were obtained with TCS keyboard by subject 1 and 2 with predictive and non-predictive typing respectively. Maximal throughput of 2.09 and 1.71 [cwpm] was obtained with TCS mouse by subject 1 and 2, respectively. Same experimental protocol has been planned for a larger number of subjects.
authors.affiliation: TKS A/S, Niels Jernes Vej 10, DK-9220 Aalborg, Denmark. lontis@hst.aau.dk
authors.forename: Eugen R
authors.initials: ER
authors.lastname: Lontis
authors.forename: Morten E
authors.initials: ME
authors.lastname: Lund
authors.forename: Henrik V
authors.initials: HV
authors.lastname: Christensen
authors.forename: Bo
authors.initials: B
authors.lastname: Bentsen
authors.forename: Michael
authors.initials: M
authors.lastname: Gaihede
authors.forename: Hector A
authors.initials: HA
authors.lastname: Caltenco
authors.forename: Lotte N S
authors.initials: LN
authors.lastname: Andreasen Struijk
mesh_terms: D016287:Computer Peripherals; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D008280:Magnetics / Q000295:instrumentation*; D008297:Male; D008328:Man-Machine Systems; D013686:Telemetry / Q000295:instrumentation*; D014059:Tongue / Q000502:physiology*; D014159:Transducers; D014584:User-Computer Interface; D014910:Wheelchairs