Simonov P V, Frolov M V
Aviat Space Environ Med. 1985 Aug;56(8):783-5.
Eyelid movements (EM)--blinking frequency and duration of closed eyes--may serve as a parameter of fatigue in humans performing as operators. Twenty subjects were told to locate and follow visual signals appearing on a screen at the frequency of 4-5 X h-1 and moving in a background of bright noises. EM was recorded in infra-red rays with tiny sensors attached to glasses' rim. EEG and ECG were recorded simultaneously. It was found that a change in EM is a sensitive parameter of fatigue and better corresponds to decreased quality of performance (time of locating signal and error in following), than changes in R-R interval. In the second experimental series, symptoms of fatigue discovered by EM were accompanied by sound signals, which improved operator's performance by 15-20%. Recording of EM may be used to monitor operator's state in humans and to forecast reliability of performance.
眼睑运动(EM)——眨眼频率和闭眼持续时间——可能作为操作人员疲劳程度的一个参数。20名受试者被告知要定位并跟踪以4 - 5次/小时的频率出现在屏幕上且在明亮噪声背景中移动的视觉信号。使用附着在眼镜边框上的微型传感器以红外线记录眼睑运动。同时记录脑电图(EEG)和心电图(ECG)。结果发现,眼睑运动的变化是疲劳的一个敏感参数,并且与操作质量下降(定位信号的时间和跟踪误差)相比,比R - R间期的变化更能与之对应。在第二个实验系列中,通过眼睑运动发现的疲劳症状伴有声音信号,这使操作人员的表现提高了15% - 20%。记录眼睑运动可用于监测人类操作人员的状态并预测操作的可靠性。