Riggs L A, Manning K A
Invest Ophthalmol Vis Sci. 1982 Jul;23(1):138-43.
We have measured the impairment of vision that accompanies a saccadic eye movement under whiteout conditions. Translucent plastic diffusers were fitted around the eyes to provide a luminous field without perceivable contours. Visual sensitivity of three subjects was tested by means of 10 msec luminance decrements of variable amplitude. We found that sensitivity was lower, by 0.7 to 1.1 log units, when the eyes were making 16 degree saccades than when they were at rest. Comparable amounts of saccadic suppression occurred under more usual Ganzfeld conditions. We therefore conclude that such minimal contours as are present in the Ganzfeld--fixation guides, minor surface blemishes, and the blurred outlines of the subject's nose and brow--have little effect on suppression. These results are consistent with the hypothesis that a centrally originating inhibitory process accompanies the initiation of the saccade.
我们已经测量了在白茫茫一片的条件下，眼跳运动所伴随的视力损伤情况。在眼睛周围安装了半透明塑料扩散器，以提供一个没有可察觉轮廓的光场。通过可变幅度的10毫秒亮度递减来测试三名受试者的视觉敏感度。我们发现，当眼睛进行16度眼跳时，敏感度比静止时低0.7至1.1个对数单位。在更常见的全视野条件下也会出现相当程度的眼跳抑制。因此我们得出结论，全视野中存在的诸如注视引导物、微小的表面瑕疵以及受试者鼻子和眉毛的模糊轮廓等最小轮廓，对抑制作用影响很小。这些结果与眼跳启动时伴随着中枢起源的抑制过程这一假设相一致。
