Osaka N
Shinrigaku Kenkyu. 1979 Apr;50(1):1-8. doi: 10.4992/jjpsy.50.1.
To test whether the equal brightness contour at supra-threshold runs parallel with the contour at threshold, magnitude estimation and the staircase procedure were employed for estimating brightness power function under dark- and light-adaptation. The luminance was changed from 43 to 83 dB re 10(-6) cd/m2 with the light adapting luminance at 53 dB. The retinal loci tested were 0 degrees to 70 degrees periphery in steps of 10 degrees. The exponent of the power function gradually increased from .37 to .73 as eccentricity and adapting luminance increased. The equal brightness contour decreased for dark-adaptation and increased for light-adaptation as eccentricity increased at supra-threshold but at threshold did not follow the parallel hypothesis for both adapting conditions.
为了测试超阈值时的等亮度轮廓是否与阈值时的轮廓平行，采用了量级估计法和阶梯法来估计暗适应和明适应下的亮度幂函数。在明适应亮度为53分贝的情况下，亮度从43分贝变化到83分贝（相对于10(-6)坎德拉/平方米）。测试的视网膜位置为从0度到70度周边，步长为10度。随着离心率和适应亮度的增加，幂函数的指数从0.37逐渐增加到0.73。在超阈值时，随着离心率增加，暗适应时等亮度轮廓减小，明适应时等亮度轮廓增加，但在阈值时，两种适应条件下均不遵循平行假设。
