Turner J E, Horwood A M, Houston S M, Riddell P M
Infant Vision Laboratory, Department of Psychology, University of Reading, Harry Pitt Building, RG6 6AL, Reading, UK.
Vision Res. 2002 Oct;42(22):2521-32. doi: 10.1016/s0042-6989(02)00268-7.
This study investigated the development of the link from accommodation to vergence in infants by occluding one eye thus removing binocular cues. Occluded adults continue to converge partially demonstrating that the accommodative drive to vergence (the AC/A link) and proximal cues are sufficient to drive vergence. For infants of all ages, AC/A ratios were found to be in the normal adult range. We conclude that infants can use monocular cues to drive vergence and that this occurs before the age when there is a substantial increase in the accuracy of oculomotor processes. There is flexibility in the developing visual system which is able to produce early vergence responses by relying upon alternative cues.
本研究通过遮挡一只眼睛以消除双眼线索，来探究婴儿从调节到聚散的联系的发展情况。被遮挡眼睛的成年人仍会继续部分聚散，这表明调节对聚散的驱动作用（即调节性集合/近感知性集合 [AC/A] 联系）以及近端线索足以驱动聚散。在所有年龄段的婴儿中，均发现AC/A比率处于正常成人范围内。我们得出结论，婴儿能够利用单眼线索来驱动聚散，且这种情况发生在眼动过程准确性大幅提高的年龄之前。发育中的视觉系统具有灵活性，能够通过依赖其他线索产生早期聚散反应。
