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Modified home video game shows promise for stroke rehabilitation
August 29, 2006Engineers at Rutgers, The State University of New Jersey, have modified a popular home video game system to assist stroke patients with hand exercises, producing a technology costing less than $600 that may one day rival systems 10 times as expensive.
The Rutgers hand rehabilitation system is an example of virtual rehabilitation, which combines virtual reality - computer-generated interactive visual environments in which users control actions in a lifelike way - with traditional therapy techniques. Virtual rehabilitation gives therapists new tools to do their jobs more effectively and engages patients who may otherwise lack interest or motivation to complete normal exercise regimens.
The Rutgers engineers are describing their work at the fifth International Workshop on Virtual Rehabilitation taking place Aug. 29 and Aug. 30 in New York City.
"Virtual reality is showing significant promise for promoting faster and more complete rehabilitation, but the cost of many systems is still prohibitive for widespread deployment in outpatient clinics or patients' homes," said Grigore Burdea, professor of electrical and computer engineering and a noted inventor of virtual rehabilitation technology. "While it's essential to keep pursuing breakthrough technologies that will initially be costly, it's just as important that we find ways to make innovative treatments accessible to the many patients who need them."
Rutgers' low-cost hand rehabilitation system is based on the commercially available Microsoft Xbox video game and Essential Reality P5 gaming glove that detects finger and wrist motions to manipulate on-screen images. The engineers made minor modifications to the equipment and created software that delivers two types of finger flexing exercises needed to help recover hand functions in stroke patients.
In one exercise, a patient attempts to wipe clean four vertical bars of "dirty" pixels that obscure a pleasant image on a computer display. The bars are erased in proportion to each finger's flexing motion, giving the patient immediate feedback on his or her performance. And in an exercise to promote finger flexing speed, a patient tries to make a fist quickly enough to "scare away" a butterfly flitting around on the screen.
The engineers noted that the gaming glove they use doesn't have the accuracy and resolution of gloves designed specifically for rehabilitation, nor can it measure exact joint movement or provide force feedback. But such systems may be attractive for clinics that can't afford more expensive equipment and could open the door for supplemental home training with remote monitoring by a clinician over an Internet connection.
Rutgers, the State University of New Jersey
"Virtual reality is showing significant promise for promoting faster and more complete rehabilitation, but the cost of many systems is still prohibitive for widespread deployment in outpatient clinics or patients' homes," said Grigore Burdea, professor of electrical and computer engineering and a noted inventor of virtual rehabilitation technology. "While it's essential to keep pursuing breakthrough technologies that will initially be costly, it's just as important that we find ways to make innovative treatments accessible to the many patients who need them."
Rutgers' low-cost hand rehabilitation system is based on the commercially available Microsoft Xbox video game and Essential Reality P5 gaming glove that detects finger and wrist motions to manipulate on-screen images. The engineers made minor modifications to the equipment and created software that delivers two types of finger flexing exercises needed to help recover hand functions in stroke patients.
In one exercise, a patient attempts to wipe clean four vertical bars of "dirty" pixels that obscure a pleasant image on a computer display. The bars are erased in proportion to each finger's flexing motion, giving the patient immediate feedback on his or her performance. And in an exercise to promote finger flexing speed, a patient tries to make a fist quickly enough to "scare away" a butterfly flitting around on the screen.
The engineers noted that the gaming glove they use doesn't have the accuracy and resolution of gloves designed specifically for rehabilitation, nor can it measure exact joint movement or provide force feedback. But such systems may be attractive for clinics that can't afford more expensive equipment and could open the door for supplemental home training with remote monitoring by a clinician over an Internet connection.
Rutgers, the State University of New Jersey
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