The role of contrast sensitivity in the development of binocular vision: A computational study

Alexander Priamikov, Vikram Narayan, Bertram E. Shi, J. Triesch
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引用次数: 4

Abstract

The development of accurate binocular vision relies on the acquisition of disparity tuning and the calibration of vergence eye movements. Both processes are fundamentally limited by visual acuity, which increases only gradually during the first year of life. Next to limiting performance, however, early limitations of visual acuity may also aid rapid learning analogous to Newport's “less-is-more” hypothesis. Here we use computational modeling to assess the potential impact of early acuity limitations on the development of binocular vision. Our starting point is a previous model of the development of binocular vision, formulated in the Active Efficient Coding framework. We extend this model to incorporate the development of visual acuity between birth and 8 months. We find that the model does in fact learn faster if visual acuity starts out poor and increases with time, supporting the less-is-more hypothesis. Furthermore, we find that the speed of acuity improvement needs to be “just right”, i.e., neither too rapid nor too slow for fastest learning. Overall, our model suggests that early limitations of visual acuity may aid infants in acquiring binocular vision skills and it provides a good starting point for computational modeling of developmental disorders of binocular vision.
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对比敏感度在双目视觉发展中的作用:一项计算研究
双目精确视觉的发展依赖于视差调优的获取和会聚眼动的标定。这两个过程基本上都受到视力的限制,视力只能在出生后的第一年逐渐增加。然而,除了限制表现之外,早期视力的限制也可能有助于快速学习,类似于纽波特的“少即是多”假说。在这里,我们使用计算模型来评估早期视力限制对双目视觉发展的潜在影响。我们的出发点是在主动高效编码框架中制定的双目视觉发展的先前模型。我们将这个模型扩展到婴儿出生到8个月之间的视力发展。我们发现,如果视觉敏锐度一开始很差,随着时间的推移而增加,这个模型实际上学得更快,这支持了“少即是多”的假设。此外,我们发现敏锐度提高的速度需要“恰到好处”,即对于最快的学习来说,既不能太快也不能太慢。总之,我们的模型表明,早期视力限制可能有助于婴儿获得双眼视觉技能,并为双眼视觉发育障碍的计算建模提供了一个良好的起点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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