Knau H, Spillmann L
Institute of Biophysics and Radiation Biology, University of Freiburg, Germany.
J Opt Soc Am A Opt Image Sci Vis. 1997 Jun;14(6):1213-22. doi: 10.1364/josaa.14.001213.
The time course and extent of brightness fading in a Ganzfeld were determined for adapting luminances ranging from 0.01 to 100 cd/m2. Magnitude estimation and interocular brightness matching were used. During Ganzfeld adaptation, perceived brightness decreased slowly and leveled off, on average, after 5-7 min (adapting time increasing with luminance). On average, the total brightness loss was equivalent to a 1.2 log unit reduction in luminance, independent of adapting luminance. The residual brightness perceived at the final plateau was generally higher than the brightness of the Eigengrau, suggesting a partially sustained luminance channel.
针对0.01至100 cd/m²范围内的适应亮度，测定了 ganzfeld 中亮度衰减的时间进程和程度。采用了量级估计和双眼亮度匹配方法。在 ganzfeld 适应过程中，感知亮度缓慢下降，平均在5 - 7分钟后趋于平稳（适应时间随亮度增加）。平均而言，总亮度损失相当于亮度降低1.2个对数单位，与适应亮度无关。在最终平稳期感知到的残余亮度通常高于绝对视场亮度，表明存在部分持续的亮度通道。
