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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hyung-Soon Park Jung Won Yoon Jonghyun Kim Iseki, K. Hallett, M. |
| Copyright Year | 2011 |
| Description | Author affiliation: National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA (Iseki, K.; Hallett, M.) || Rehabilitation Medicine Department, Clinical Center, National Institutes of Health, Bethesda, MD, USA (Hyung-Soon Park; Jung Won Yoon; Jonghyun Kim) |
| Abstract | Freezing of gait (FOG) is a commonly observed phenomenon in Parkinson's disease, but its causes and mechanisms are not fully understood. This paper presents the development of a virtual reality (VR)-based body-weight supported treadmill interface (BWSTI) designed and applied to investigate FOG. The BWSTI provides a safe and controlled walking platform which allows investigators to assess gait impairments under various conditions that simulate real life. In order to be able to evoke FOG, our BWSTI employed a novel speed adaptation controller, which allows patients to drive the treadmill speed. Our interface responsively follows the subject's intention of changing walking speed by the combined use of feedback and feedforward controllers. To provide realistic visual stimuli, a three dimensional VR system is interfaced with the speed adaptation controller and synchronously displays realistic visual cues. The VR-based BWSTI was tested with three patients with PD who are known to have FOG. Visual stimuli that might cause FOG were shown to them while the speed adaptation controller adjusted treadmill speed to follow the subjects' intention. Two of the three subjects showed FOG during the treadmill walking. |
| Starting Page | 1 |
| Ending Page | 5 |
| File Size | 685490 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781424498635 |
| ISSN | 19457898 |
| e-ISBN | 9781424498628 |
| e-ISBN | 9781424498611 |
| DOI | 10.1109/ICORR.2011.5975463 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-06-29 |
| Publisher Place | Switzerland |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Legged locomotion virtual reality Parkinson's disease freeze of gait gait assessment Feedforward neural networks Parkinson's Disease Pelvis Adaptive control Foot Three dimensional displays BWSTI (body-weight supported treadmill interface) treadmill control |
| Content Type | Text |
| Resource Type | Article |
| Subject | Rehabilitation Control and Systems Engineering Electrical and Electronic Engineering |
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