SENSORY CONSTRAINTS ON OCULOMOTOR DEVELOPMENT IN INFANCY

这项建议的目的是调查眼球跳动的发展， 6周龄、12周龄和18周龄婴儿的追踪和集中眼动控制 人类婴儿。总体目标不仅是描述重要的 前四年眼球运动控制的发展 出生后几个月，还评估各种感觉能力， 可能会限制引导每个眼动系统的有效性。 对扫视系统的研究将使用自动眼睛监控系统 检查可靠地引起扫视的最小目标位移 和强制选择优先查看(FPL)程序来检查 目标移位阈值的感官估计。对中国传统文化的研究 追踪系统将使用FPL来检查运动检测的阈值， 速度辨别、运动后效和眼睛监控 用于检查幼儿预测性跟踪的系统。对中国传统文化的研究 Verise系统将使用双目监控眼睛的能力 检查融合会聚、侧方闪光、AC/A比率的系统，以及 屈光度的静止位置；双眼斜视测量与视觉 诱发电位(VEP)检查单眼抑制；以及自动 一种验光装置，用于检查眼球的静止位置和准确度 住宿。这些实验将有助于确定 幼儿表现出的低效和不准确的眼球运动控制 感觉信息退化或运动或运动功能障碍的结果 感觉-运动编程。最后，感觉和动眼功能评定 为正常婴儿开发的技术将应用于小婴儿 临床眼畸形患者样本。

The purpose of this proposal is to investigate the development of saccadic, pursuit, and vergence eye movement control in 6-, 12-, and 18-week-old human infants. The overall goal is not only to characterize significant developments in oculomotor control that occur during the first four postnatal months, but also to assess a variety of sensory abilities that may limit the effectiveness with which each eye movement system is guided. Studies of the saccadic system will use an automated eye monitoring system to examine the smallest target displacement that reliably elicits a saccade and the forced-choice preferential looking (FPL) procedure to examine sensory estimates of the threshold for target displacement. Studies of the pursuit system will use FPL to examine thresholds for motion detection, velocity discrimination, and the motion after effect and the eye monitoring system to examine predictive tracking in young infants. Studies of the vergence system will use the binocular capabilities of the eye monitoring system to examine fusional vergence, lateral phorias, the AC/A ratio, and the resting position of vergence; binocular pupillometry and the visual evoked potential (VEP) to examine monocular suppression; and an automated refraction device to examine the resting position and accuracy of accommodation. These experiments will aid in determining if the inefficient and inaccurate oculomotor control exhibited by young infants is the result of degraded sensory information or a deficit in motor or sensory-motor programming. Finally, the sensory and oculomotor assessment techniques developed for use with normal infants will be applied to a small sample of clinical patients with ocular anomalies.