Schor C M, Badcock D R
Vision Res. 1985;25(8):1113-9. doi: 10.1016/0042-6989(85)90100-2.
We have used DOG stimuli to selectively stimulate size tuned channels within the visual system in order to investigate the relationship between stereo and vernier acuity. We measured these acuities as a function of spatial frequency, retinal eccentricity and distance from the fixation point in depth. Both hyperacuities are poorer with low spatial frequencies but vernier was effected to a smaller extent. Vernier acuity deteriorated to a much greater degree than stereo acuity as retinal eccentricity increased up to 40 arc min. Stereo acuity was more dependent upon distance from the fixation point in depth than would be expected from the dependence of vernier acuity on retinal eccentricity. We conclude that there must be different limiting factors for the two hyperacuity tasks.
我们使用了高斯差分（DOG）刺激来选择性地刺激视觉系统内的大小调谐通道，以研究立体视敏度和游标视敏度之间的关系。我们将这些视敏度作为空间频率、视网膜离心率以及深度上与注视点距离的函数进行测量。两种超视敏度在低空间频率时都较差，但游标视敏度受到的影响较小。随着视网膜离心率增加至40弧分，游标视敏度的恶化程度比立体视敏度大得多。立体视敏度比游标视敏度对视网膜离心率的依赖性更依赖于深度上与注视点的距离。我们得出结论，这两种超视敏度任务必定存在不同的限制因素。
