Dynamic Therapies in Los Angeles, California, USA.
Phys Occup Ther Pediatr. 2010 Feb;30(1):66-78. doi: 10.3109/01942630903291170.
The purpose of this study was to examine, using a modified visual cliff apparatus, possible perceptual differences at crawling age between infants born preterm and infants born at term without documented visual or motor impairments. Sixteen infants born at term and 16 born preterm were encouraged to crawl to their caregivers on a modified visual cliff. Successful trials, crossing time, duration of visual attention, duration of tactile exploration, motor strategies, and avoidance behaviors were analyzed. A significant surface effect was found, with longer crossing times and longer durations of visual attention and tactile exploration in the condition with the visual appearance of a deep cliff. Although the two groups of infants did not differ on any of the timed measures, infants born at term demonstrated a larger number of motor strategies and avoidance behaviors by simple tally. This study indicates that infants born at term and those born preterm can perceive a visual cliff and adapt their responses accordingly.
本研究旨在使用改良的视崖装置，检测在无视觉或运动损伤记录的情况下，早产儿与足月儿在爬行期的可能的知觉差异。鼓励 16 名足月产婴儿和 16 名早产婴儿在改良的视崖上爬到他们的照顾者身边。分析了成功的试验、穿越时间、视觉注意力持续时间、触觉探索持续时间、运动策略和回避行为。结果发现，在具有深悬崖外观的条件下，穿越时间更长，视觉注意力和触觉探索的持续时间更长，存在显著的表面效应。尽管两组婴儿在任何计时测量上都没有差异，但通过简单计数，足月产婴儿表现出更多的运动策略和回避行为。本研究表明，足月产婴儿和早产儿都能感知视崖，并相应地调整他们的反应。
