title: Performance study involving a force-reflecting joystick for spastic individuals performing two types of tracking tasks.
abstract: 10 upper-extremity spastic subjects and 10 normal subjects were studied with a force-reflecting joystick in the performance of a continuous time-tracking task as well as an acquisition task termed, "Fitts' Law." Certain force-reflection paradigms, in a spatial sense, allowed the spastic subjects to obtain performance proficiency near levels of the normal subjects as measured by a capacity metric.
authors.affiliation: Armstrong Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433-6573, USA.
authors.forename: D W
authors.initials: DW
authors.lastname: Repperger
authors.forename: C A
authors.initials: CA
authors.lastname: Phillips
authors.forename: T L
authors.initials: TL
authors.lastname: Chelette
mesh_terms: D018737:Hand Strength; D006801:Humans; D009128:Muscle Spasticity; D013647:Task Performance and Analysis