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A Neurophysiologic Study of Visual Fatigue in Stereoscopic Related Displays.

机译：立体视觉相关显示中视觉疲劳的神经生理学研究。

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摘要

Two tasks were investigated in this study. The first study investigated the effects of alignment display errors on visual fatigue. The experiment revealed the following conclusive results: First, EEG data suggested the possibility of cognitively-induced time compensation changes due to a corresponding effect in real-time brain activity by the eyes trying to compensate for the alignment. The magnification difference error showed more significant effects on all EEG band waves, which were indications of likely visual fatigue as shown by the prevalence of simulator sickness questionnaire (SSQ) increases across all task levels. Vertical shift errors were observed to be prevalent in theta and beta bands of EEG which probably induced alertness (in theta band) as a result of possible stress. Rotation errors were significant in the gamma band, implying the likelihood of cognitive decline because of theta band influence. Second, the hemodynamic responses revealed that significant differences exist between the left and right dorsolateral prefrontal due to alignment errors. There was also a significant difference between the main effect for power band hemisphere and the ATC task sessions. The analyses revealed that there were significant differences between the dorsal frontal lobes in task processing and interaction effects between the processing lobes and tasks processing. The second study investigated the effects of cognitive response variables on visual fatigue. Third, the physiologic indicator of pupil dilation was 0.95mm that occurred at a mean time of 38.1min, after which the pupil dilation begins to decrease. After the average saccade rest time of 33.71min, saccade speeds leaned towards a decrease as a possible result of fatigue on-set. Forth, the neural network classifier showed visual response data from eye movement were identified as the best predictor of visual fatigue with a classification accuracy of 90.42%. Experimental data confirmed that 11.43% of the participants actually experienced visual fatigue symptoms after the prolonged task.
机译：在这项研究中调查了两个任务。第一项研究调查了对齐显示错误对视觉疲劳的影响。实验揭示了以下结论性结果：首先，EEG数据表明，由于试图补偿对准的眼睛对实时大脑活动的相应影响，认知诱发的时间补偿可能会发生变化。放大倍数差值误差对所有EEG波段波均显示出更显着的影响，这是可能的视觉疲劳的迹象，如模拟器疾病调查表（SSQ）在所有任务级别上的患病率增加所显示。观察到垂直移位误差普遍存在于脑电图的θ和β带中，这可能是由于可能的压力导致机敏（在θ带中）。旋转误差在伽玛谱带中很明显，这意味着由于θ谱带的影响而导致认知能力下降的可能性。其次，血液动力学反应表明，由于对准误差，左右背外侧前额叶之间存在显着差异。功率带半球的主要影响与ATC任务会议之间也存在显着差异。分析显示，在任务处理中背额叶之间存在显着差异，并且在处理叶与任务处理之间存在交互作用。第二项研究调查了认知反应变量对视觉疲劳的影响。第三，瞳孔散布的生理指标为0.95mm，平均38.1分钟，此后瞳孔散布开始减少。在平均扫视休息时间为33.71分钟之后，扫视速度可能会由于疲劳发作而趋于下降。第四，神经网络分类器显示来自眼睛运动的视觉响应数据被确定为视觉疲劳的最佳预测指标，分类精度为90.42％。实验数据证实，长时间任务后，有11.43％的参与者实际经历了视觉疲劳症状。

著录项

  • 作者

    Nutung-Wiyor, Hanniebey Dolphyne.;

  • 作者单位

    North Carolina Agricultural and Technical State University.;

  • 授予单位 North Carolina Agricultural and Technical State University.;
  • 学科 Engineering Industrial.;Psychology Behavioral.;Biophysics Biomechanics.
  • 学位 Ph.D.
  • 年度 2013
  • 页码 181 p.
  • 总页数 181
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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