POSTURAL SWAY OF HUMAN INFANTS WHILE STANDING IN LIGHT AND DARK
POSTURAL SWAY OF HUMAN INFANTS WHILE STANDING IN LIGHT AND DARK
复制标题
DOI：
10.2307/1130806
复制
发表时间：
1991-12-01
影响因子：
4.6
通讯作者：
MCCARTY, ME
中科院分区：
文献类型：
--
作者：
ASHMEAD, DH;MCCARTY, ME
研究人员测量了12-14个月大的婴儿和成人在光明和黑暗中站立时的姿势摇摆。对所有频率、特定频率和个体受试者进行的频谱密度分析表明，婴儿在黑暗中通常不会比在光明中更明显地摇摆，而成年人却会。例如，婴儿的前后和侧面的暗/光摇摆比例分别为1.12和1.21，而成人的单脚站立比例为2.23和3.43，两脚站立比例为1.43和2.13。一项统计分析表明，如果婴儿的暗/亮比例与成人相当，就可以发现显著差异。这些发现表明，站立姿势的早期调节并不依赖于视觉信息的持续可用性。
Postural sway was measured in 12-14-month-old human infants and in adults while they were standing in the light and dark. Spectral density analyses conducted on all frequencies, at specific frequencies, and for individual subjects showed that infants generally did not sway significantly more in the dark than in the light, whereas adults did. For example, infants' dark/light sway proportions were 1.12 and 1.21 for the anterior-posterior and lateral dimensions, respectively, compared to adult values of 2.23 and 3.43 for one-footed stance, and 1.43 and 2.13 for two-footed stance. A statistical power analysis indicated that if the dark/light proportions for infants had been comparable to those for adults, significant differences could have been detected. These findings indicate that the early regulation of standing posture does not depend on the continuous availability of visual information.