Nakashima K, Sato H
Department of Ergonomics, Kyushu Institute of Design.
Ann Physiol Anthropol. 1992 Mar;11(2):97-103. doi: 10.2114/ahs1983.11.97.
The purpose of the present study was to evaluate the mental workload of short-term memory task by two objective measures, the secondary task performance and the frontal midline theta rhythm (Fm theta) of the electroencephalogram (EEG). First, to choose Fm theta appearance subjects EEGs were recorded for 18 male students during performing additional task. On Fm theta appearance subjects (8 males) a series of short-term memory task with changed number of memorable figures was imposed as the primary task, and tracking task as the secondary task. The task that presents seven numbers will be over the subjects' limits of short-term memory, and it was the threshold that the subjects' mental workload will be increased.
本研究的目的是通过两种客观测量方法评估短期记忆任务的心理负荷，这两种方法分别是次要任务表现和脑电图（EEG）的额中线θ节律（Fm theta）。首先，为了选择出现Fm theta的受试者，在18名男学生执行附加任务期间记录了他们的脑电图。在出现Fm theta的受试者（8名男性）中，将一系列记忆数字数量变化的短期记忆任务作为主要任务，并将跟踪任务作为次要任务。呈现七个数字的任务将超出受试者的短期记忆极限，这是受试者心理负荷增加的阈值。
