TY - JOUR
T1 - The effects of signal salience and caffeine on performance, workload, and stress in an abbreviated vigilance task
AU - Temple, J. G.
AU - Warm, J. S.
AU - Dember, W. N.
AU - Jones, K. S.
AU - LaGrange, C. M.
AU - Matthews, G.
PY - 2000
Y1 - 2000
N2 - In 2 experiments, a 12-min computerized vigilance task was demonstrated to reproduce the vigilance decrement, high workload (NASA-TLX), and stressful character (Dundee Stress State Questionnaire) of vigilance tasks lasting 30 min or more. In Experiment 1, the abbreviated task was also shown to duplicate the signal salience effect, a major finding associated with long-duration vigilance tasks. Moreover, Experiment 2 showed that performance on the abbreviated task can be enhanced by caffeine - A drug that benefits long-duration tasks. This enhancement effect was limited to performance, however, suggesting that caffeine influences factors that control signal detection but not those that control task-induced stress. The results parallel those obtained with long-duration tasks and support a resource-depletion model of the vigilance decrement. The abbreviated task might be useful in situations in which long-duration tasks are precluded (e.g., performance assessment batteries, neuropsychological testing, and brain imaging).
AB - In 2 experiments, a 12-min computerized vigilance task was demonstrated to reproduce the vigilance decrement, high workload (NASA-TLX), and stressful character (Dundee Stress State Questionnaire) of vigilance tasks lasting 30 min or more. In Experiment 1, the abbreviated task was also shown to duplicate the signal salience effect, a major finding associated with long-duration vigilance tasks. Moreover, Experiment 2 showed that performance on the abbreviated task can be enhanced by caffeine - A drug that benefits long-duration tasks. This enhancement effect was limited to performance, however, suggesting that caffeine influences factors that control signal detection but not those that control task-induced stress. The results parallel those obtained with long-duration tasks and support a resource-depletion model of the vigilance decrement. The abbreviated task might be useful in situations in which long-duration tasks are precluded (e.g., performance assessment batteries, neuropsychological testing, and brain imaging).
UR - http://www.scopus.com/inward/record.url?scp=0033805865&partnerID=8YFLogxK
U2 - 10.1518/001872000779656480
DO - 10.1518/001872000779656480
M3 - Article
C2 - 11022879
AN - SCOPUS:0033805865
VL - 42
SP - 183
EP - 194
JO - Human Factors
JF - Human Factors
SN - 0018-7208
IS - 2
ER -