Development of spatiotemporal mechanisms in infant vision.
Development of spatiotemporal mechanisms in infant vision.
复制标题
婴儿视觉时空机制的发展。
DOI：
10.1016/0042-6989(88)90111-3
复制
发表时间：
1988
期刊：
影响因子：
1.8
通讯作者：
Wilson,HR
中科院分区：
文献类型：
--
作者：
Wilson,HR
在成人中，时空视觉信息是通过许多针对方向和空间频率调整的机制并行处理的。对婴儿神经解剖数据的检查表明，这些机制的发展涉及三个主要因素（1）中心凹锥体外节的生长导致机制敏感性增加。（2）中心凹锥体的迁移产生空间尺度的变化以及机制调谐向更高空间频率的逐渐转变。（3）皮质抑制的发展将低通转变为带通空间频率和方向调谐。这些变化被发展成一个定量模型，该模型被证明可以为许多有关婴儿视力的心理物理数据提供连贯的解释。
In adult spatiotemporal vision information is processed in parallel by a number of mechanisms tuned for orientation and spatial frequency. An examination of infant neuroanatomical data suggests that three major factors are involved in the development of these mechanisms(1) Growth of foveal cone outer segments causes an increase in mechanism sensitivity.(2) Migration of foveal cones produces a change in spatial scale and a progressive shift of mechanism tuning towards higher spatial frequencies.(3)Development of cortical inhibition transforms low-pass into bandpass spatial frequency and orientation tuning. These changes are developed into a quantitative model which is shown to provide a coherent interpretation of many of the psychophysical data on infant vision.