韩厉萍 吴兴裕 李学义 胡文东 王涛 李小京 710032 西安，第四军医大学空军医学系 中华航海医学杂志 1999 0 0 1


    关键词：噪声；工效试验；工效学 期刊 zhhhyxzz 0 航海环境医学 fur -->


    

【摘要】 目的 观察低频中等强度噪声对于人对隐藏图形和速度估计作业绩效的影响。方法 20名健康青年男性受试者，在85与95 dB(A)分别暴露2小时，进行了隐藏图形和速度估计作业任务测试，并与50 dB(A)暴露2小时作自身对照比较。结果 与对照比较，在95 dB(A)噪声条件下暴露2小时，隐藏图形作业的平均反应时显著延长(P <0.05)，反应时绩效及综合绩效显著下降(P <0.01)；速度估计作业的正确率显著下降(P <0.01)，错误的主要成分为低估比例显著升高(P <0.01)。但85 dB(A)噪声条件下暴露2小时，仅隐藏图形作业的综合绩效下降及速度估计作业的低估比例显著升高(P <0.05)。结论 本试验85与95 dB(A)两种强度噪声条件下暴露2小时，对隐藏图形和速度估计作业任务的绩效有一定的影响，表明在目前以保护听力为目的的卫生学标准容许范围的噪声强度，对较为复杂或脑力负荷较大的作业任务的工效会有一定的影响。

    

    Influence of noise on performance effects of hiddenfigure and velocity evaluation HAN Liping, WU Xingyu, LI Xueyi, et al. Department of Aerospace Medicine, Fourth MilitaryMedical University, Xi-an 710032

     【Abstract】 Objective Toinvestigate the influence of moderate intensity low frequency noise on human performanceeffects of hidden figure and velocity evaluation.Methods With 2 h 85 or 95 dB(A) separate exposure, the performance tests ofhidden figure and velocity evaluation were carried out after each exposure in 20 healthyyoung male subjects, and were compared with 2 h 50 dB(A) exposure as self-control.Results As compared with self-control, the mean reaction time(MRT) ofhidden figure test was prolonged (P <0.05)and the MRT performance and total performance both decreased significantly(P <0.01) at the time of 2 h of exposure to the noise of 95 dB(A),meanwhile, the accurate rate of velocity evaluation test decreased significantly(P <0.01) which was mainly due to the incresae of under-evaluate rate (P <0.01). But with 2 h exposure to the noise of 85 dB(A), there wereonly a decrease of total performance of hidden figure test and an increase ofunder-evaluate rate of velocity evaluation test (P <0.05).Conclusions With 2 h exposure to the noise of either 85 or 95 dB(A) in ourtests, there were shown some influence on the performance effects of hidden figure andvelocity evaluation, which demonstrated that noise lower than the present hygienicstandard has still some effects on performance of complex tasks with consideable highmental workload.

     【Key words】 Noise Performance tets Ergonomics

(Chin J Naut Med, 1999,6:7)

噪声对人的认知信息加工的影响具有十分重要的意义 ......