A novel approach to the physiological measurement of mental workload
A novel approach to the physiological measurement of mental workload
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DOI：
10.1016/j.ijpsycho.2011.02.003
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发表时间：
2011-04-01
影响因子：
3
通讯作者：
Hatfield, Bradley D.
中科院分区：
文献类型：
--
作者：
Miller, Matthew W.;Rietschel, Jeremy C.;Hatfield, Bradley D.
在执行难度逐渐变化的视觉运动任务时，研究人员对个体进行了各种新颖的、与任务无关的听觉刺激。为了确定任务负荷对大脑皮层处理这些刺激的影响，在参与者执行任务时记录事件相关电位。我们发现N1、P2、P3和后期正电位（LPP）分量振幅与任务难度呈负相关。这表明，古怪范式的一种变体——刺激流由新奇的声音组成——能够提供一种可靠的心理工作量指标。(C) 2011 Elsevier B.V.版权所有
While performing a visuo-motor task under incrementally-varied levels of difficulty, individuals were probed with a variety of novel, task-irrelevant, auditory stimuli. To determine the effect of task load on cerebral-cortical processing of these stimuli, event-related potentials were recorded while participants performed the task. We found that N1, P2, P3 and late positive potential (LPP) component amplitudes were inversely related to task-difficulty. This suggests that a variant of the oddball paradigm - in which the stimulus stream comprises novel sounds - is capable of providing a reliable index of mental workload. (C) 2011 Elsevier B.V. All rights reserved.