Effect of Caffeine on Vigilance and Cognitive Performance During Extended Wakefulness
In this double-blind, randomized, 37-hr sleep deprivation study, 15 military pilot students received either placebo or 200 mg of caffeine twice a day. Vigilance was assessed 6 times and learning 4 times, both in a computerized environment. Motivation, mood, and sleepiness were monitored using self-r...
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Published in | The International journal of aviation psychology Vol. 20; no. 2; pp. 144 - 159 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Mahwah
Taylor & Francis Group
01.04.2010
Lawrence Erlbaum Associates, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | In this double-blind, randomized, 37-hr sleep deprivation study, 15 military pilot students received either placebo or 200 mg of caffeine twice a day. Vigilance was assessed 6 times and learning 4 times, both in a computerized environment. Motivation, mood, and sleepiness were monitored using self-ratings. In the vigilance test, sleep deprivation decreased the amount of correct detections and increased reaction times in both groups. Furthermore, the number of false alarms increased in the placebo group. Participants receiving caffeine showed overconfidence, as they did not report any clear decline in subjectively assessed success despite impaired performance in the vigilance test. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1050-8414 1532-7108 |
DOI: | 10.1080/10508411003617847 |