Cogan A I, Silverman G
Am J Optom Physiol Opt. 1980 Aug;57(8):508-15. doi: 10.1097/00006324-198008000-00004.
Detection rates were determined for multiple flashes (20-msec duration, 7.5 arc min dia) presented foveally to one eye while the other eye had either a uniform target (the "monocular" condition), a congruent grating (fusion), or an orthogonal grating (rivalry). Average detection rates were highest in the monocular condition, and they were about the same in fusion and rivalry. In all conditions, the typical error (some 70% of all errors) was one stimulus missed out of several simultaneously presented. It was concluded that sensitivity fluctuates over the fovea, even in the absence of contours in the other eye. In two observers, the ratio of detection rates for the two eyes was about the same for all conditions; in two other observers, this ratio decreased (eye dominance increased) in fusion, and especially in rivalry, relative to the monocular condition. The question is raised whether a common link exists between spontaneous fluctuations of sensitivity and those induced by dichoptic contours.
检测率是针对向一只眼睛的中央凹呈现的多次闪光（持续时间20毫秒，直径7.5弧分）来确定的，而另一只眼睛要么有一个均匀的目标（“单眼”条件）、一个一致的光栅（融合），要么有一个正交的光栅（竞争）。平均检测率在单眼条件下最高，在融合和竞争条件下大致相同。在所有条件下，典型误差（约占所有误差的70%）是在几个同时呈现的刺激中遗漏一个。得出的结论是，即使另一只眼睛没有轮廓，中央凹的敏感度也会波动。在两名观察者中，两只眼睛的检测率之比在所有条件下大致相同；在另外两名观察者中，相对于单眼条件，这个比例在融合尤其是竞争时下降（眼优势增加）。由此提出一个问题，即敏感度的自发波动与双眼视差轮廓引起的波动之间是否存在共同联系。
