Measurement of information processing load and visual load on a dynamic information processing task
Measurement of information processing load and visual load on a dynamic information processing task
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DOI：
10.1080/01449290310001593621
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发表时间：
2003-09
影响因子：
3.7
通讯作者：
Chia-Fen Chi;Yen-Hui Lin;W. Lan
中科院分区：
文献类型：
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作者：
Chia-Fen Chi;Yen-Hui Lin;W. Lan
设计了一项动态视觉信息处理任务，通过反应时间、瞳孔直径和眼动参数来研究基于时间和强度的因素对操作员信息处理负荷的影响。时间因子受目标速率和扫描速率的影响，而强度因子受简单反应任务和物理匹配（选择反应）任务的差异的影响。九名参与者以两种不同的扫描速度跟踪扫描线，并被要求以两种不同的时间频率对两个指定的目标做出反应。结果表明，任务难度（基于强度的因素）对反应时间有显著影响。将目标速率和扫描速率作为一个基于时间的因子，以三个扫描角度进行积分。时间因子对注视时间、扫视幅度、注视频率、眼动速度、反应时间和命中率有显著影响。时间因子与强度因子之间无交互作用。基于模型人处理器的时间压力（所需时间除以可用时间定义）与扫描速率、目标速率和任务难度呈正相关。研究发现，如果能够基于预测模型方法可靠地预测所需的时间，则是最客观可靠的。
A dynamic visual information processing task was designed to investigate time-based and intensity-based factors on an operator's information processing load as measured by reaction time, pupil diameter, and eye movement parameters. The time-based factor was manipulated by the target rate and scanning rate while the intensity-based factor was manipulated by the difference between a simple reaction task and a physical matching (choice reaction) task. Nine participants tracked the scanning line at two different scanning rates and were required to respond to two designated targets presented singly at two different temporal frequencies. The results indicated that task difficulty (the intensity-based factor) had a significant effect on the reaction time. Target rate and scanning rate were integrated as one time-based factor in terms of three sweeping angles. The time-based factor was found to have a significant effect on the fixation time, saccade amplitude, fixation frequency, eye movement speed, reaction time and hit rate. No interaction effect was found between time-based and intensity-based factors. The time pressure (defined by the time required divided by the time available) based on a model human processor was positively related to scanning rate, target rate and task difficulty. It was found to be the most objective and reliable if time required can be reliably predicted based on a predictive model approach.