Abstract
Publisher Summary This chapter discusses the measurement of work load using brain potentials during video display terminal (VDT) tasks. For this purpose the variation of eye fixation-related potential (EFRP) is examined in which the subject is instructed to draw a same pattern at the fight side on the CRT as the stimulus figure presented at the left side without using copy command. However, no systematic variation or A B decrement in EFRP among blocks is found in the result. The pattern of the variation in amplitude seemed to relate to the arousal level. The test of the subjective symptoms on fatigue indicated that the subject felt fatigued by the tasks. The values were measured after the task, not during the task. In this study, the relationship between EFRP and fatigue of the subjects is not found. However, if the task continued longer period, EFRP might change more clearly. This research indicated that EFRP would be applicable as an index of the work load in the VDT task.
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