Levi D M, Harwerth R S, Smith E L
Science. 1979 Nov 16;206(4420):852-4. doi: 10.1126/science.493988.
A suprathreshold grating presented to one eye elevated the threshold for the discrimination of gratings similar in size and orientation presented to the fellow eye. The magnitude and stimulus specificity of these binocular interactions in human observers with normal bioncular vision were similar to those in observers deprived of normal binocular visual experience; however, the latter showed a failure of binocular summation at threshold or subthreshold contract levels. Whereas strabismus or amblyopia disrupted the normal excitatory interactions between the two eyes, cortical inhibitory binocular connections seem not to have been disrupted.
呈现给一只眼睛的阈上光栅提高了辨别呈现给另一只眼睛的大小和方向相似的光栅的阈值。在具有正常双眼视觉的人类观察者中，这些双眼相互作用的幅度和刺激特异性与那些缺乏正常双眼视觉体验的观察者相似；然而，后者在阈值或阈下对比度水平上表现出双眼总和失败。斜视或弱视会破坏两只眼睛之间正常的兴奋性相互作用，而皮质抑制性双眼连接似乎并未受到破坏。
