Graduate School of Humanities and Social Sciences, Nagoya City University, 1, Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya 467-8501, Japan.
Infant Behav Dev. 2013 Dec;36(4):517-25. doi: 10.1016/j.infbeh.2013.04.002. Epub 2013 Jun 2.
This longitudinal study investigated the effects of attentional development on peripheral stimulus localization by analyzing the eye and head movements of toddlers as they matured from 12 to 36 months. On each trial of an experiment, a central fixation point and a 30° peripheral stimulus were presented, such that in the gap condition the fixation disappeared 300 ms before the peripheral stimulus, whereas in the no-overlap condition it disappeared simultaneously as the peripheral stimulus, and in the overlap condition the fixation remained present when the peripheral target occurred. Results showed that eye and head movement latencies were highly correlated in all conditions and ages. However, at 12 months, head movements were as fast as eye movements, whereas during the subsequent development, eye movements became increasingly faster than head movements. These findings are indicative of a transition between 12 and 36 months due either to a change in attentional control, or to changes in the size of the visual field in which only eye movements occur.
这项纵向研究通过分析从 12 个月到 36 个月之间发育成熟的幼儿的眼动和头动，研究了注意力发展对周围刺激定位的影响。在实验的每一次试验中，呈现一个中央注视点和一个 30°的外周刺激，使得在间隙条件下，注视点在 300 毫秒前消失，而在外周刺激同时消失的无重叠条件下，当外周目标出现时，注视点保持存在。结果表明，在所有条件和年龄下，眼动和头动潜伏期高度相关。然而，在 12 个月时，头动和眼动一样快，而在随后的发展过程中，眼动变得越来越快。这些发现表明，12 至 36 个月之间发生了转变，要么是由于注意力控制的变化，要么是由于只有眼动发生的视野大小的变化。
