A theory of the visual system biology underlying development of spatial frequency lateralization.
A theory of the visual system biology underlying development of spatial frequency lateralization.
复制标题
空间频率偏侧化发展基础的视觉系统生物学理论。
DOI：
10.1016/j.bandc.2007.01.004
复制
发表时间：
2007
影响因子：
2.5
通讯作者：
Reggia,JamesA
中科院分区：
文献类型：
--
作者：
Howard,MaryF;Reggia,JamesA
空间频率假说认为，在各种视觉空间任务的半球之间的性能差异是由于视觉刺激的空间频率内容的侧化处理。Hellige提出，这种偏侧化可能是在婴儿发育过程中出现的，原因是右半球较早成熟，加上视觉系统对高空间频率的敏感性增加。这个建议是直观的吸引力，但缺乏一个明确的理论与基础的视觉系统生物学。在本文中，我们开发了这样一个理论的基础上的视觉系统的处理和发展的知识。然后，我们将我们的理论转化为一个计算模型，作为一系列发展模拟的基础。我们发现，模拟产生的空间频率偏侧化效果与经验观察一致。我们与我们的理论所暗示的神经不对称性的性质，视觉通路的偏见和相对空间频率偏侧化效应的实证研究结果。
The spatial frequency hypothesis contends that performance differences between the hemispheres on various visuospatial tasks are attributable to lateralized processing of the spatial frequency content of visual stimuli. Hellige has proposed that such lateralization could arise during infant development from the earlier maturation of the right hemisphere combined with the increasing sensitivity of the visual system to high spatial frequencies. This proposal is intuitively appealing but lacks an explicit theory with respect to the underlying visual system biology. In this paper, we develop such a theory based on knowledge of visual system processing and development. We then translate our theory into a computational model that serves as the basis for a series of development simulations. We find that the simulations produce spatial frequency lateralization effects consistent with those observed empirically. We relate the nature of the neural asymmetry implied by our theory to empirical findings on visual pathway bias and the relative spatial frequency lateralization effect.