Reducing trial length in force platform posturographic sleep deprivation measurements
| Autor: | Edward Hæggström, Pia Forsman, Anders Wallin |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
medicine.medical_specialty
business.industry Applied Mathematics Posturography Flicker fusion threshold 030210 environmental & occupational health Trial Length 03 medical and health sciences Sleep deprivation 0302 clinical medicine Physical medicine and rehabilitation Postural stability medicine Force platform Monitoring methods medicine.symptom business Instrumentation Engineering (miscellaneous) 030217 neurology & neurosurgery Balance (ability) |
| Zdroj: | Measurement Science and Technology. 18:2893-2897 |
| ISSN: | 1361-6501 0957-0233 |
| DOI: | 10.1088/0957-0233/18/9/019 |
| Popis: | Sleepiness correlates with sleep-related accidents, but convenient tests for sleepiness monitoring are scarce. The posturographic test is a method to assess balance, and this paper describes one phase of the development of a posturographic sleepiness monitoring method. We investigated the relationship between trial length and accuracy of the posturographic time-awake (TA) estimate. Twenty-one healthy adults were kept awake for 32 h and their balance was recorded, 16 times with 30 s trials, as a function of TA. The balance was analysed with regards to fractal dimension, most common sway amplitude and time interval for open-loop stance control. While a 30 s trial allows estimating the TA of individual subjects with better than 5 h accuracy, repeating the analysis using shorter trial lengths showed that 18 s sufficed to achieve the targeted 5 h accuracy. Moreover, it was found that with increasing TA, the posturographic parameters estimated the subjects' TA more accurately. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|