臺灣博碩士論文加值系統

本研究最主要是探討在VDT作業環境下，動態的資訊呈現方式對作業員心
智負荷的影響。本實驗設計一個VDT視覺追蹤作業來模擬一個簡單的雷達
，當目標物出現時，操作員必須按下反應鍵。透過改變資訊的出現頻率、
作業困難度，以及掃瞄線的速度，並以受試者的反應時間、瞳孔直徑的變
化，以及眼球運動速度為最主要的衡量績效指標，期望找出瞳孔波動變化
的特徵值與三個自變項間的對應關係，藉以瞭解影響人員資訊處理負荷的
重要因素。研究結果顯示：(1)作業困難度及資訊出現頻率顯著影響平均
反應時間。(2)掃瞄線的速度及資訊出現頻率顯著影響眼球運動速度。(3)
瞳孔的平均上升值(H) 與瞳孔的波動振幅(A) 及瞳孔直徑的標準差等指標
可以說明眼球運動速度增加所導致的心智負荷，但是無法完全解釋受試者
資訊處理速度增加所導致的人員資訊處理負荷。關鍵詞：心智負荷、眼球
運動速度、瞳孔直徑

The current research designed an experiment to investigate the
effects on three important task factors in dynamic visual
information presentation on mental workload as reflected in the
eye movement parameters. Ten subjects tracked the scanning line
at two different speeds. They were required to respond to a
designed targets presented at two different frequency. The
difficulty of the reaction time task was manipulated by the
difference between a simple reaction task and a physical match
task. Reaction time, pupil diameter and eye movement speed were
collected to observed the impacts of three important task
factors to the human information processing load. The result
proved that reaction time was significantly affected by the task
difficulty and target presentation frequency while eye movement
speed was affected by the tracking speed and target presentation
frequency. The magnitude of increase and curve amplitude and
standard deviation of the pupil diameter can partially explain
the increase in information processing load due to increase in
eye movement speed.Keyword: mental load, eye movement speed,
pupil diameter