Ono Hiroshi, Saqib Yosuf
Perception. 2015;44(5):597-603. doi: 10.1068/p7934.
We found that the imaginary line passing through two stimuli that points to an eye appears to do so when seen monocularly, which is consistent with Porterfield's axiom but inconsistent with Wells's proposition regarding visual direction. We also found that the imaginary line appears to point to the bridge of the nose when the near stimulus is seen binocularly and the far one is seen monocularly, which is consistent with Wells's proposition but inconsistent with Porterfield's axiom. We argue that these findings themselves do not necessarily vitiate the axiom or the proposition and that one should explore the different experimental conditions and hypothesize about the processes that might be involved.
我们发现，一条穿过两个指向眼睛的刺激点的假想线，在单眼观察时似乎也是如此，这与波特菲尔德公理一致，但与韦尔斯关于视觉方向的命题不一致。我们还发现，当近距离刺激通过双眼观察而远距离刺激通过单眼观察时，这条假想线似乎指向鼻梁，这与韦尔斯的命题一致，但与波特菲尔德公理不一致。我们认为，这些发现本身并不一定会使该公理或命题无效，人们应该探索不同的实验条件，并对可能涉及的过程进行假设。
