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为探讨视敏度及对比敏感度函数与图形辨认的相关性,对61名健康男性军事飞行员进行实验,检测其双眼裸眼视敏度、7个空间频率(0.5、1.0、1.8、3.7、9.2、29.1、43.6cpd)的CSF值,并要求被试者完成5种(视角分别为13.18’、10.31’、8.25’、6.67’、5.56’)(每种50次)不同机种飞机阿形Ⅱ的辨认任务,将所得视敏度、CSF值与辨认效率进行相关与回归分析。结果表明:视敏度与各个大小的飞机图肜辨认效率间均无显著相关(P>0.05),而CSF与多个大小的飞机图形辨认效率间存在显著相关(P<0.05),且图肜的辨认主要与低频部分相关显著。
In order to explore the correlation between visual acuity and contrast sensitivity function and pattern recognition, 61 healthy male military pilots were tested and their uncorrected visual acuity (BOV), 7 spatial frequencies (0.5, 1.0, 1.8, 3.7, 9.2, 29.1 and 43.6 cpd), and asked the subjects to complete the identification of aircraft A Ⅱ with 5 different kinds of aircraft (each with 13.18 ’, 10.31’, 8.25 ’, 6.67’ and 5.56 ’ Task, the resulting visual acuity, CSF value and identify the efficiency of correlation and regression analysis. The results showed that there was no significant correlation between the visual acuity and the identification efficiency of all sizes of aircraft (P> 0.05), while there was a significant correlation between the CSF and the efficiency of multiple aircraft identification (P <0.05) The identification is mainly correlated with the low frequency part.