Visual and somatosensory contributions to infant sitting postural control.
Visual and somatosensory contributions to infant sitting postural control.
复制标题
视觉和体感对婴儿坐姿控制的贡献。
DOI：
10.1080/08990220.2018.1551203
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发表时间：
2018
影响因子：
0.9
通讯作者：
Stergiou,Nick
中科院分区：
文献类型：
--
作者：
Kyvelidou,Anastasia;Stergiou,Nick
有一些研究调查了婴儿期的坐姿和感觉系统的作用。本研究的目的是探讨视觉和躯体感觉信号改变对婴儿坐姿控制的影响。13名婴儿（平均年龄± SD，259.69 ± 16.88天）参加了研究。最初，一个物理治疗师进行皮博迪发展运动量表，以确定典型的运动发展。然后，在四种随机条件下将儿童放置在测力平台上：（a）对照（C）-独立坐在测力板上，（B）躯体感觉（SS）-独立坐在泡沫垫（低密度）上，（c）视觉（VS）-独立坐在测力板上，同时关闭灯，产生昏暗的照明，以及（d）B和c的组合（NVSS）。通过Vicon软件以240 Hz采集前后（AP）和内外（ML）方向的压力中心（COP）数据。VS和NVSS这两种熄灯条件导致AP方向上的均方根（RMS）和范围值增加，以及ML方向上的李雅普诺夫指数（LyE）值增加。在正常发育的婴儿中，视觉信息的改变比躯体感觉信息的改变对坐姿控制的影响更大。关灯条件（VS和NVSS）揭示了坐姿期间AP和ML方向的不同控制机制。因此，目前的研究结果证实了视觉的优势，在早期收购的一个新的姿势的成就。
There are a limited number of studies that have investigated sitting posture during infancy and the contribution of the sensory systems. The goal of this study was to examine the effects of altered visual and somatosensory signals on infant sitting postural control. Thirteen infants (mean age ± SD, 259.69 ± 16.88 days) participated in the study. Initially, a single physical therapist performed the Peabody Developmental Motor Scale to determine typical motor development. Then the child was placed onto a force platform under four randomized conditions: (a) Control (C) – sat independently on the force plate, (b) Somatosensory (SS) – Sat independently on a foam pad (low density), (c) Visual (VS) – sat independently on the force plate while the lights were turned off creating dim lighting, and (d) Combination of b and c (NVSS). Center of pressure (COP) data from both the anterior-posterior (AP) and the medial-lateral (ML) directions were acquired through the Vicon software at 240 Hz. The lights off conditions, both VS and NVSS, lead to increased Root Mean Square (RMS) and Range values in the AP direction, as well as increased Lyapunov Exponent (LyE) values in the ML direction. Altered visual information lead to greater disturbances of sitting postural control in typically developing infants than altered somatosensory information. The lights off conditions (VS and NVSS), unveiled different control mechanisms for AP and ML direction during sitting. Thus, the present findings confirm the dominance of vision during the early acquisition of a new postural accomplishment.