Citation

Bonnefond A, Roge J, Muzet A. Int. J. Occup. Safety Ergonomics 2006; 12(3): 221-229.

Affiliation

Centre d'Etudes de Physiologie Appliquée, Centre National de la Recherche Scientifique, Strasbourg, France. anne.bonnefond@c-strasbourg.fr

Copyright

(Copyright © 2006, Centralny Instytut Ochrony Pracy - Państwowy Instytut Badawczy, Publisher Informa - Taylor and Francis Group)

DOI

unavailable

PMID

16984782

Abstract

The frequency of some behaviour (such as self-centred gestures) increases during a task that leads to the occurrence of low-vigilance episodes. These gestures can be useful in stimulating oneself. A study carried out in 20 adults has enabled us to state that motor activity (recorded with an actimeter) increases with the duration of a monotonous driving task and sleep deprivation. The analysis of the scores recorded using the Karolinska Sleepiness Scale has shown that drivers can assess the deterioration of their state of vigilance according to the actual sleep preceding the driving test. Finally, the joint analysis of the subjective and objective data revealed a co-variation of these two types of indices. We discuss the stimulatory function of the motor activity in a task leading to the occurrence of low-vigilance episodes by investigating, among other things, the use, conscious or not, of this type of activity.

Language: en