No interference of task complexity with circadian rhythmicity in a constant routine protocol

被引:23
作者
van Eekelen, A
Kerkhof, G
机构
[1] Univ Amsterdam, Fac Psychol, Dept Psychon, NL-1018 WB Amsterdam, Netherlands
[2] MCH Westeinde, Ctr Sleep & Wake Disorders, NL-2501 CK The Hague, Netherlands
关键词
constant routine; performance; task complexity; circadian rhythmicity; prior wakefulness;
D O I
10.1080/0014013031000121598
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Time course in task performance has been studied extensively. In particular, the investigation of circadian rhythmicity in task performance that varied in complexity. However, these studies disclosed heterogeneous outcomes. This could be the result of confounding exogenous factors, the use of diverse tasks, as well as accumulating sleepiness interfering with the underlying circadian drive. The present study varied task demands systematically within a single task and a dual task, using a constant routine protocol to examine the unmasked influence of the endogenous circadian oscillator on the periodicity of performance. Moreover, the subjects were divided into an early-start and a late-start group to estimate the potential interaction of circadian rhythmicity with the duration of prior wakefulness. The results revealed a distinct congruence in the circadian rhythms of all performance measures, with which prior wakefulness (< 40 h) did not interact. Also, single-task as well as dual-task complexity did not interfere with circadian rhythmicity. In conclusion, when sufficiently controlled for masking exogenous factors, task complexity is removed from the underlying circadian rhythms.
引用
收藏
页码:1578 / 1593
页数:16
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