@article{ref1,
title="Quantifying time awake posturographically",
journal="Conference proceedings - IEEE engineering in medicine and biology society",
year="2008",
author="Forsman, Pia and Wallin, Anders and Tietäväinen, A. and Haeggström, E.",
volume="1",
number="",
pages="686-688",
abstract="Although sleepiness is a major risk factor in traffic and occupational accidents, convenient, quantitative, and commercial sleepiness testing is lacking. The issue is relevant to policymakers concerned with legislation for, and surveillance of, traffic- and occupational safety. This work suggested and examined posturographic sleepiness testing for instrumentation purposes. In 63 subjects -for whom we tested balance with a force platform during sustained waking for maximum 36 h- sustained waking impaired the balance. The sustained waking explained 60% of the diurnal balance variations, whereas the time of day explained 40% of the balance variations. The first finding -- that balance depends on the subject's time awake (TA)-- allowed to posturographically estimate the subjects' TA with 86% accuracy and 97% precision. Results also show that balance scores tested at 13:30 hours serve as a threshold to detect excessive sleepiness. This work provides guidelines for a posturographic sleepiness tester.<p /> <p>Language: en</p>",
language="en",
issn="1557-170X",
doi="",
url="http://dx.doi.org/"
}