Sakai L M, Baker L A, Dawson M E
University of Southern California, Los Angeles.
Psychophysiology. 1992 Mar;29(2):207-17. doi: 10.1111/j.1469-8986.1992.tb01687.x.
Studies on adults have suggested that a deterioration in performance (within session vigilance decrement) on a continuous performance task may be related to individual differences in baseline levels of electrodermal activity (electrodermal lability). This study investigated this relationship in 153 children, aged 9-16 years. A significant vigilance decrement was observed, as indicated by average decreases in perceptual sensitivity (d') over an 11.5-min time period. Although electrodermal labiles were overall more perceptually sensitive than electrodermal stabiles, results did not support the premise that the performance of stabiles decreases over time more than that of labiles. Performance on other cognitive tasks, involving tests of perceptual speed ability, did not appear to be highly related to vigilance performance. However labiles were not only better able to sustain their attention, but also performed better and faster on these cognitive tasks.
针对成年人的研究表明，在持续操作任务中表现的恶化（即时段内警觉性下降）可能与皮肤电活动（皮肤电反应性）基线水平的个体差异有关。本研究对153名9至16岁的儿童进行了此项关系的调查。观察到显著的警觉性下降，表现为在11.5分钟时间段内感知敏感度（d'）平均下降。尽管皮肤电反应性不稳定者总体上比皮肤电反应性稳定者在感知上更敏感，但结果并不支持以下前提，即稳定者的表现随时间推移比不稳定者下降得更多。涉及感知速度能力测试的其他认知任务的表现似乎与警觉性表现没有高度关联。然而，不稳定者不仅更能保持注意力，而且在这些认知任务上表现得更好且更快。
