The Relation Between Mental Workload and Useful Field of View during Pursuit Eye Movement

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  • 追従眼球運動時のメンタルワークロードと有効視野の関係
  • ツイジュウ ガンキュウ ウンドウジ ノ メンタルワークロード ト ユウコウ シヤ ノ カンケイ

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Abstract

Experiments on useful field of view（UFOV）and mental workload were conducted with the aim of elucidating the mechanisms of field of view narrowing while driving. The experiments involved a visual stimulus response task against a background image of driving scene in order to measure UFOV during pursuit eye movement, and an experiment to study mental workload by giving subjects a numerical task（recitation, addition）as secondary task. It was found that UFOV narrows markedly as mental workload increases. These results support existing theories that propose a mechanism for narrowing of UFOV associated with information processing resource and field of view width and depth. Also, along with increase of mental workload, the UFOV narrowing during pursuit eye movement occurs at vertical in advance of horizontal direction.

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