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Hindi Journal of Diagnostic Techniques and Biomedical AnalysisISSN: 2469-5653
Nordahl SHG Author
Subjects of specialization
Affiliation
Physiological time series; Drift; Symbolic dynamics; Information pattern
National Competence Service for Vestibular Disorders, Department of Otorhinolaryngology, Head and Neck Surgery, Haukeland University Hospital, N-5021 Bergen, Norway
Biography
| Nordahl SHG National Competence Service for Vestibular Disorders, Department of Otorhinolaryngology, Head and Neck Surgery, Haukeland University Hospital, N-5021 Bergen, Norway |
Publications
Short Communication Open Access
The Turning Point for Maintaining Balance
Author(s): Aasen T, Nordahl SHG, Goplen FK and Knapstad MK
Background: A method for detecting the critical time frame for reacting to postural sway in order to maintain balance has been previously proposed. However, this method requires subjective assessment, which reduces cost-efficiency and could introduce bias. In this article, we present a simple and robust algorithm to estimate the time window length, the turning point, during which the regulating functions for maintaining the upright position come into action.
Methods: Postural sway was measured using a static balance platform across four conditions (eyes open/closed, standing on bare platform/rubber foam) in a group of healthy subjects and a group of patients suffering from dizziness. The Hurst exponent is a measure of long-term memory of a tim... view more»
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