McIlwain J T
J Comp Neurol. 1977 Oct 1;175(3):337-44. doi: 10.1002/cne.901750307.
The orientation of the visual streak of the cat's retina was compared to that of the long axis of the slit pupil in the same eye. In five paralyzed, anesthetized cats, the retinal projection to the superior colliculus was mapped with electrophysiological techniques. The orientation of the visual streak was estimated from the projection in visual space of the collicular region of high magnification which corresponds to the central projection of the streak. The angle by which the streak was tilted from absolute horizontal was always within one or two degree of the angle by which the pupil axis was tilted from absolute vertical. This relationship was confirmed in three of the animals in which small retinal lesions were placed a known distance from the histologically determined axis of the streak. From the visual coordinates of these lesions, an independent estimate of the streak's orientation was obtained. In each case, the tilt of streak axis from horizontal differed by no more than 0.5 degrees from the tilt of the pupil axis from vertical. The results support the hypothesis that planes containing the long axis of the cat's slit pupil are perpendicular to planes containing the long axis of the visual streak of the same eye.
将猫视网膜视觉条纹的方向与其同一只眼睛中裂隙瞳孔长轴的方向进行了比较。在五只瘫痪、麻醉的猫中，用电生理技术绘制了视网膜向上丘的投射图。视觉条纹的方向是根据高倍放大的丘状区域在视觉空间中的投射来估计的，该区域对应于条纹的中央投射。条纹相对于绝对水平倾斜的角度总是在瞳孔轴相对于绝对垂直倾斜角度的一到两度范围内。在三只动物中证实了这种关系，在这些动物中，在距组织学确定的条纹轴已知距离处造成了小的视网膜损伤。根据这些损伤的视觉坐标，获得了条纹方向的独立估计值。在每种情况下，条纹轴相对于水平的倾斜与瞳孔轴相对于垂直的倾斜相差不超过0.5度。这些结果支持了这样一种假设，即包含猫裂隙瞳孔长轴的平面与包含同一只眼睛视觉条纹长轴的平面相互垂直。
