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Perception of simulated driving performance after sleep restriction and caffeine

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dc.contributor.authorBiggs, S.
dc.contributor.authorSmith, A.
dc.contributor.authorDorrian, J.
dc.contributor.authorReid, K.
dc.contributor.authorDrew, D.
dc.contributor.authorvan den Heuvel, C.
dc.contributor.authorBaulk, S.
dc.date.issued2007
dc.descriptionCopyright © 2007 Elsevier Inc. All rights reserved.
dc.description.abstractObjective As feelings of alertness are reported to be highly correlated with performance perception, the objective of this study was to determine whether caffeine, a common countermeasure to driver sleepiness, affected a sleepy driver's ability to monitor his or her simulated driving performance. Methods Twelve healthy young adults (six males, six females) participated in three counterbalanced, blinded, daytime conditions: control [9 h time in bed (TIB)], 100 mg caffeine (4 h TIB), and placebo (4 h TIB). Driving performance was measured through lane drift on a series of 30-min simulated driving sessions. Subjective sleepiness and perception of driving performance were measured at 5-min intervals during driving sessions via the Karolinska Sleepiness Scale and a corresponding perception scale. Results Sleep restriction had a significant detrimental effect on driving performance and subjective measures. Caffeine resulted in significant improvements across all measures. Subjective measures were found to be significantly correlated after sleep restriction and prior to caffeine. Correlations between actual and perceived performance were nonsignificant across all conditions. Conclusions The strong correlation between subjective measures supports the postulation that sleepiness is used as a cue for performance prediction when sleep restricted. The relationship between perceived and actual performance after fatigue countermeasures remains inconclusive. Further research, addressing limitations, is needed.
dc.description.statementofresponsibilitySarah N. Biggs, Andrew Smith, Jill Dorrian, Kathryn Reid, Drew Dawson, Cameron van den Heuvel and Stuart Baulk
dc.description.urihttp://www.elsevier.com/wps/find/journaldescription.cws_home/525474/description#description
dc.identifier.citationJournal of Psychosomatic Research, 2007; 63(6):573-577
dc.identifier.doi10.1016/j.jpsychores.2007.06.017
dc.identifier.issn0022-3999
dc.identifier.issn1879-1360
dc.identifier.orcidvan den Heuvel, C. [0000-0001-7264-4655]
dc.identifier.urihttp://hdl.handle.net/2440/41530
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.rightsCopyright status unknown
dc.source.urihttps://doi.org/10.1016/j.jpsychores.2007.06.017
dc.subjectCaffeine
dc.subjectDriver sleepiness
dc.subjectPerception
dc.subjectSimulated driving
dc.subjectYoung drivers
dc.titlePerception of simulated driving performance after sleep restriction and caffeine
dc.typeJournal article
pubs.publication-statusPublished

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