电力牵引工频高压电磁场对人体视—运动反应时的影响

Effects of industrial frequency electromagnetic fields on the visual activity response time of human body

通过对我国电力牵引达22年区段的27.5kV工频电场强度为1.75～346kV/m,磁感应强度为0.60～1.75mT,人体感应电流为10.08～58.40μA环境下作业的1359名工人和无电磁场接触史的375名工人的视—运动反应时值进行的测验和分析。结果表明两组无明显差异。引起视—运动反应时值的延长,机体协调功能减退的主要原因是年龄因素的增长所致,而与职业无明显关系。

This paper surveyed the, visual activity response time of 1359 workers who exposed to 27.5kV industrial frequency electromagnetic fields for 22 Years which the elect(?)ic field intensity was 1.75～3.46 kV/m, magnetic flux density was 0.60～1.75mT and human induced current was 10.08～58.40μA, and 375 workers who had no exposed history. The result showed that there was no obviously difference between two groups. The extention of visual activity response time and failing in human coordinating function were caused bY increase of age and not occupational effect.