オフィス環境における知的集中計測のための認知課題の開発

Abstract

The authors have been developing CTR (Concentration Time Ratio), a quantitative measurement method using the answering time distribution of receipt classification task as a cognitive task with uniformed difficulty. However, the receipt classification task has some problems. In this study, a new cognitive task has been proposed in a useful and more suitable style for measuring the intellectual concentration. The task, “ comparison task ”, has been developed based on the aspect of cognitive psychology and human information processing. Two experiments were conducted to assess the comparison task. One experiment was to confirm that the task employs linguistic ability and numerical ability, cerebral blood flow was measured by NIRS when conducting the task. As the result, it showed activation of prefrontal area and Broca ’s area. The other experiment was to confirm that the answering time of the task was properly affected by the room environment. As the result, the calculated CTRs showed the difference of environmental conditions.