Title :
Upper limb assessment using a Virtual Peg Insertion Test
Author :
Fluet, Marie-Christine ; Lambercy, Olivier ; Gassert, Roger
Author_Institution :
Rehabilitation Eng. Lab., RITZ, ETH Zurich, Zurich, Switzerland
fDate :
June 29 2011-July 1 2011
Abstract :
This paper presents the initial evaluation of a Virtual Peg Insertion Test developed to assess sensorimotor functions of arm and hand using an instrumented tool, virtual reality and haptic feedback. Nine performance parameters derived from kinematic and kinetic data were selected and compared between two groups of healthy subjects performing the task with the dominant and non-dominant hand, as well as with a group of chronic stroke subjects suffering from different levels of upper limb impairment. Results showed significantly smaller grasping forces applied by the stroke subjects compared to the healthy subjects. The grasping force profiles suggest a poor coordination between position and grasping for the stroke subjects, and the collision forces with the virtual board were found to be indicative of sensory deficits. These preliminary results suggest that the analyzed parameters could be valid indicators of impairment.
Keywords :
biomechanics; force feedback; haptic interfaces; medical computing; medical disorders; patient diagnosis; touch (physiological); virtual reality; arm sensorimotor function assessment; chronic stroke subjects; dominant hand; grasping force; hand sensorimotor function assessment; haptic feedback; instrumented tool; kinematic data; kinetic data; nondominant hand; performance parameters; upper limb assessment; upper limb impairment; virtual peg insertion test; virtual reality; Force; Force measurement; Force sensors; Grasping; Instruments; Trajectory; Adult; Arm; Biomechanics; Female; Hand; Humans; Male; Psychomotor Performance; Stroke; Upper Extremity;
Conference_Titel :
Rehabilitation Robotics (ICORR), 2011 IEEE International Conference on
Conference_Location :
Zurich
Print_ISBN :
978-1-4244-9863-5
Electronic_ISBN :
1945-7898
DOI :
10.1109/ICORR.2011.5975348