Rossel S, Mathis U, Collett T
Institut für Biologie 1, Albert-Ludwigs-Universität, Freiburg, Germany.
Vis Neurosci. 1992 Feb;8(2):165-70. doi: 10.1017/s0952523800009329.
We have investigated how the binocular control of prey capture in the praying mantis is affected by abnormally large vertical disparities, which were introduced by prisms placed in front of the eyes. The position of a target on the two retinae determines both the magnitude of head saccades made to fixate a target and its perceived distance. Over the whole range of vertical disparities tested (up to at least 30 deg), the frequency of fixating saccades is normal while the amplitude of their vertical component is a compromise between the saccades specified by each eye individually. Distance measurements are not affected by imposed vertical disparities. But the larger the vertical disparity, the more reluctant the mantid is to strike at the target until disparities exceed 15 deg when no strikes are elicited at all.
我们研究了置于螳螂眼前的棱镜所造成的异常大的垂直视差是如何影响其捕食时双眼对猎物的控制的。目标在两个视网膜上的位置决定了为注视目标而产生的头部扫视的幅度及其感知距离。在所测试的整个垂直视差范围内（至少达到30度），注视扫视的频率正常，但其垂直分量的幅度是每只眼睛单独指定的扫视之间的折衷。距离测量不受施加的垂直视差影响。但是垂直视差越大，螳螂就越不愿意攻击目标，直到视差超过15度时，根本不会引发攻击行为。
