Citation

Jackson ML, Raj S, Croft RJ, Hayley AC, Downey LA, Kennedy GA, Howard ME. Traffic Injury Prev. 2016; 17(3): 251-257.

Affiliation

a Institute for Breathing and Sleep, Austin Health , Melbourne , Australia.

Copyright

(Copyright © 2016, Informa - Taylor and Francis Group)

DOI

10.1080/15389588.2015.1055327

PMID

26065627

Abstract

OBJECTIVE: Slow eyelid closure is recognized as an indicator of sleepiness in sleep deprived individuals, although automated ocular devices are not well validated. This study aimed to determine whether changes in eyelid closure is evident following acute sleep deprivation as assessed by an automated device, and how ocular parameters relate to performance after sleep deprivation.

METHODS: Twelve healthy professional drivers (45.58±10.93 years) completed two randomized sessions; after a normal night of sleep and after 24-hours of total sleep deprivation. Slow eye closure (PERCLOS) was measured while drivers performed a simulated driving task.

RESULTS: Following sleep deprivation, drivers displayed significantly more eyelid closure (p<0.05), greater variation in lane position (p<0.01) and more attentional lapses (p<0.05) compared to after normal sleep. PERCLOS was moderately associated with variability in both vigilance performance (r=0.68, p<0.05) and variation in lane position on the driving task (r=0.61, p<0.05).

CONCLUSIONS: Automated ocular measurement appears to be an effective means of detecting impairment due to sleep loss in the laboratory.

Language: en