Anisotropies in peripheral vernier acuity.
Anisotropies in peripheral vernier acuity.
复制标题
周边游标敏锐度各向异性。
作者：
G. Westheimer
在正常人观察者视野周边的许多位置测量短水平、垂直和倾斜目标线的游标敏锐度。在10 °周边，三个观察者在八个位置的倾斜游标线的平均对准阈值是垂直和水平目标线的2.29倍。这种倾斜效应在视野中随处可见。对于其中线仅由其远端端点替换的配置，得出类似的结论，但是在这里，另外，当点对与固定点共线时，即径向取向时，性能明显优于当其切向取向时。无论是游标线和点对，在所有的观察者，水平配置显示出更好的阈值比垂直的。这些结果表明，在整个视野中的固有模式的连接有利于处理的基本方向上的垂直，径向的切线，并在有限的程度上，水平的垂直。
Vernier acuity for short horizontal, vertical and oblique target lines was measured in many locations in the periphery of the visual field in normal human observers. In the 10 deg periphery, the average alignment threshold with oblique vernier lines in eight locations for three observers was 2.29 times higher than that with vertical and horizontal target lines. This oblique effect was found everywhere in the visual field. Similar conclusions are drawn for configurations in which the lines were replaced by just their distal endpoints, but here, additionally, performance was distinctly better when the dot pair was collinear with the fixation point, i.e. oriented radially, than when it was oriented tangentially. Both for vernier lines and for dot pairs, in all observers, horizontal configurations showed somewhat better thresholds than vertical ones. These results suggest an inherent pattern of connectivity throughout the visual field favoring processing in the cardinal orientations over the obliques, the radial over the tangential and, to a limited extent, the horizontal over the vertical.
周边超敏锐度：等偏心平分优于径向平分。
DOI：
10.1364/josaa.4.001562
发表时间：
1987
期刊：
Journal of the Optical Society of America. A, Optics and image science
影响因子：
--
作者：
Yap,YL;Levi,DM;Klein,SA
通讯作者：
Klein,SA