Cognitive load assessment is crucial for understanding human performance in various domains. This study investigates the impact of different task conditions and time constraints on cognitive load using multiple measures, including subjective evaluations, performance metrics, and physiological eye-tracking data. Fifteen participants completed a series of primary and secondary tasks with different time limits. The NASA-TLX questionnaire, reaction time, inverse efficiency score, and eye-related features (blink, saccade, and fixation frequency) were utilized to assess cognitive load. The study results show significant differences in the level of cognitive load required for different tasks and when under time constraints. The study also found that there was a positive correlation (r = 0.331, p = 0.014) between how often participants blinked their eyes and the level of cognitive load required but a negative correlation (r = -0.290, p = 0.032) between how often participants made quick eye movements (saccades) and the level of cognitive load required. Additionally, the analysis revealed a significant negative correlation (r = -0.347, p = 0.009) and (r = -0.370, p = 0.005) between fixation and saccade frequencies under time constraints.

翻译：认知负荷评估对于理解人类在不同领域中的表现至关重要。本研究采用主观评价、行为绩效指标及生理眼动追踪数据等多维度测量方法，探究不同任务条件与时间限制对认知负荷的影响。15名参与者在不同时间限制下完成系列主任务与次任务。研究采用NASA-TLX问卷、反应时、逆效率分数以及眼部特征（眨眼频率、扫视频率与注视频率）评估认知负荷。结果显示，不同任务类型及时间约束条件下所需的认知负荷水平存在显著差异。研究还发现，参与者眨眼频率与认知负荷水平呈正相关（r=0.331，p=0.014），而快速眼动（扫视）频率与认知负荷水平呈负相关（r=-0.290，p=0.032）。此外，分析表明在时间约束条件下，注视频率与扫视频率之间存在显著负相关（r=-0.347，p=0.009）与（r=-0.370，p=0.005）。