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The research concerning to the spontaneous eyeblinking as an index of arousal - and activitiy - livel.

关于自发眨眼作为唤醒和活动指标的研究很活跃。

基本信息

批准号：
62510040
负责人：
HARIU Tohru
金额：
$ 1.28万
依托单位：
Akita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1988
项目状态：
已结题

项目摘要

The purpose of this research was to investigate the relationship between arousal level and eyeblink activities. i.e., eveblink rate. latency, and waveform. In Experiment 1, we examinedthe effects of mental load, vocalization, and time-on task upon blink activities in the visual vigillance task. Subjects (n=49) were instructed to watch the CRT display and to identify the target letters, and to count the number of targets among 120 stimuli. The stimulus, Japanese 'kana' letter, was presented sequentially with a frequency of 0.5-Hz. The duration was 1sec. The blink rate decreased under the task but the effect decreased as a function of the time course. The mean blink rate increased significantly in the vocalizedcondition but did not differ among 3-levels of mental load. The eyeblink latency, time delay from the stimulus onset, prolonged 100-250ms in the target-trial and increased as a function of mental load. The amplitude and rise/fall times of blink response decreased as a function of mental load. In Experiment 2, subjects(n=12) were engaged in the same task under hypnotic state. The mean eyeblink rate in the hypnosis grooup significantly lower than that in the non-hypnotic control group(n=12).These results showed that the eyeblink activity is a good index of arousal state. It is clear that the latency and waveform measures are powerful indices of short-term arousal state or a task demand in the discrete trial paradigm. It ts also indicated that the eyeblink rate measure is sensitive to the long-term arousal states, i.e., fatigue, in the continuously prolonged task paradigm.

本研究旨在探讨唤醒水平与眨眼活动的关系。也就是说，eveblink率。延迟和波形。在实验一中，我们考察了心理负荷、发声和任务时间对眨眼活动的影响。受试者（n=49）被指示观看CRT显示器和识别目标字母，并在120个刺激中计数目标的数量。刺激，日本的“假名”字母，依次呈现的频率为0.5赫兹。持续时间为1秒。任务下的眨眼率下降，但作为一个函数的时间过程中的效果下降。在发声条件下，平均眨眼率显著增加，但在3个心理负荷水平之间没有差异。眨眼潜伏期，从刺激开始的时间延迟，延长100- 250毫秒的目标试验和增加的心理负荷的函数。眨眼反应的幅度和上升/下降时间作为心理负荷的函数而降低。实验二，被试（n=12）在催眠状态下进行相同的任务。催眠组的平均眨眼率显著低于非催眠对照组（n=12），提示眨眼活动是一个较好的觉醒状态指标。很明显，在离散试验范式中，潜伏期和波形测量是短期唤醒状态或任务需求的有力指标。它还表明眨眼率测量对长期唤醒状态敏感，即，疲劳，在持续延长的任务范式。