Luna Fernando G, Barttfeld Pablo, Martín-Arévalo Elisa, Lupiáñez Juan
Cognitive Science Group, Instituto de Investigaciones Psicológicas (IIPsi, CONICET-UNC), Facultad de Psicología, Universidad Nacional de Córdoba, Boulevard de la Reforma esquina Enfermera Gordillo S/N, CP 5000 Córdoba, Argentina(1); Department of Experimental Psychology, and Mind, Brain, and Behavior Research Center (CIMCYC), University of Granada, Campus de Cartuja S/N, CP 18011 Granada, Spain.
Cognitive Science Group, Instituto de Investigaciones Psicológicas (IIPsi, CONICET-UNC), Facultad de Psicología, Universidad Nacional de Córdoba, Boulevard de la Reforma esquina Enfermera Gordillo S/N, CP 5000 Córdoba, Argentina(1).
Conscious Cogn. 2022 Feb;98:103263. doi: 10.1016/j.concog.2021.103263. Epub 2021 Dec 23.
Previous research has shown opposite effects of dual tasking on the vigilance decrement phenomenon. We examined the executive (i.e., detecting infrequent critical signals) and arousal (i.e., sustaining a fast reaction to stimuli without much control on responses) vigilance decrements as a function of task load. Ninety-six participants performed either a single signal-detection (i.e., executive vigilance) task, a single reaction time (i.e., arousal vigilance) task, or a dual vigilance task with the same stimuli and procedure. All participants self-reported their fatigue' state along the session. Exploratory analyses included data from a previous study with a triple task condition. Task load significantly modulated the executive but not the arousal vigilance decrement. Interestingly, the largest increase in mental fatigue was observed in the single executive vigilance task condition. We discuss limitations of classic vigilance theories to account for the vigilance decrement and changes in mental fatigue as a function of task load.
先前的研究表明，双重任务对警觉性下降现象有相反的影响。我们将执行警觉性（即检测不频繁的关键信号）和唤醒警觉性（即对刺激保持快速反应，对反应控制较少）下降作为任务负荷的函数进行了研究。96名参与者分别执行单一信号检测（即执行警觉性）任务、单一反应时间（即唤醒警觉性）任务或具有相同刺激和程序的双重警觉任务。所有参与者在整个过程中自我报告他们的疲劳状态。探索性分析包括来自先前一项三重任务条件研究的数据。任务负荷显著调节了执行警觉性下降，但未调节唤醒警觉性下降。有趣的是，在单一执行警觉任务条件下观察到心理疲劳增加最多。我们讨论了经典警觉理论在解释警觉性下降和作为任务负荷函数的心理疲劳变化方面的局限性。
