Virtual reality in posturography. |
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Authors: | Timo Tossavainen Esko Toppila Ilmari Pyykk? Pia M Forsman Martti Juhola Jukka Starck |
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Affiliation: | Department of Computer Sciences, University of Tampere, Tampere FI-33014, Finland. tt@cs.uta.fi |
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Abstract: | Balance dysfunctions are common, especially among elderly people. Present methods for the diagnosis and evaluation of severity of dysfuntion have limited value. We present a system that makes it easy to implement different visual and mechanical perturbations for clinical investigations of balance and visual-vestibular interaction. The system combines virtual reality visual stimulation with force platform posturography on a moving platform. We evaluate our contruction's utility in a classification task between 33 healthy controls and 77 patients with Ménière's disease, using a series of tests with different visual and mechanical stimuli. Responses of patients and controls differ significantly in parameters computed from stabilograms. We also show that the series of tests achieves a classification accuracy slightly over 80% between controls and patients. |
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