Psychophysiological study on mental strain and eye-movements

本研究的目的是开发用于产业工人的嗜睡和疲劳心理生理学的眼电(EOG)测量方法。EOG的测量相对容易地适用于人类执行各种任务。EOG的成分包括眨眼、扫视、慢眼球运动(SEM)，可以提供关于疲劳和人类其他心理生理状态的各种信息。在本项目的研究1中，进行了实验检查，以阐明EOG作为衡量嗜睡的指标的用途。在相对静态和单调的“听课”情境下记录EOG、外显行为和主观报告。在相关分析的结果中，扫描电子显微镜有助于检测昏昏欲睡的程度。在接下来的研究(研究2)中，我们将EOG指标应用于长途通宵Tru…更多的单车驾驶。记录EOG、EEG(脑电)、ECG(心电图)、视频图像(驾驶员的前视和行为)、与前车的距离(红外线仪器测量)。眨眼持续时间在午夜至清晨时间延长，并伴有主观嗜睡和辅助行为的增加，许多病例随后出现自发休息或小睡。交通状况是影响眨眼和眼跳频率的主要因素。然而，当交通条件单调时，昏昏欲睡与眨眼和扫视的频率显著减少有关。研究结果表明，结合眨眼时长、水平眼电波时长和频率以及交通状态、辅助行为的观察，可以有效地评价驾驶员的睡眠状况。结果表明，在连续的夜间工作中，嗜睡性增强。较少

Purpose of this study is to develop the methods to apply the EOG (electro-oculogram) measures for psychophysiology of sleepiness and fatigue concerning safety and comfort in industrial workers. Measurements of EOG are relatively easily applicable for human performing various tasks. Components of EOG including eye-blinking, saccades, slow eye movements (SEM) may provide various information about fatigue and other psychophysiological states of human.In the research 1 of this project, experimental examination was performed to clarify the usage of EOGs as a measure for sleepiness. EOG, overt behavior and subjective reports were recorded in relatively static and monotonous situation of "hearing a lecture". In the results of correlation analyses, the SEM was useful to detect the strong level of sleepiness or "dozen-off'. Eye-blink- durations showed positive correlation to the level of subjective sleepiness.In the next research (research 2), EOG indices were applied to long-haul overnight tru … More ck driving. EOG, EEG (electroencephalogram), ECG (electrocardiogram), video-images (forward view and behavior of the driver), distance from the car ahead (measured by infrared instruments) were recorded. Increase of eye-blink-duration was observed in the time of midnight to early morning, accompanied by the increase in subjective sleepiness and subsidiary behavior, and followed by spontaneous break or nap in many cases. Traffic condition was the main factor which affects the frequencies in eye-blinking and saccades. However, strong sleepiness was related to a remarkable decrease in the frequencies of eye-blinking and saccades when the traffic condition was monotonous. Results indicate that the combination of observation of duration and frequencies in eye-blinking, horizontal-EOG, and traffic conditions, subsidiary behavior is useful to evaluate the driver's sleepiness.In the research 3, methods and tools developed in these researches were applied to a professional truck-driver in permanent night work. Results showed enhancement of sleepiness during the succession of night work. Less