Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University - São Paulo, SP, Brazil.
Res Dev Disabil. 2011 Nov-Dec;32(6):2075-83. doi: 10.1016/j.ridd.2011.08.018. Epub 2011 Sep 15.
The aim of this study was to examine the coupling between visual information and body sway and the adaptation in this coupling of individuals with cerebral palsy (CP). Fifteen children with and 15 without CP, 6-15 years old, were required to stand upright inside of a moving room. All children first performed two trials with no movement of the room and eyes open or closed, then four trials in which the room oscillated at 0.2 or 0.5 Hz (peak velocity of 0.6 cm/s), one trial in which the room oscillated at 0.2 Hz (peak velocity of 3.5 cm/s), and finally two other trials in which the room oscillated again at 0.2 Hz (peak velocity of 0.6 cm/s). Participants with CP coupled body sway to visual information provided by the moving room, comparable to the coupling of participants without CP. However, participants with CP exhibited larger body sway in maintaining upright position and more variable sway when body sway was induced by visual manipulation. They showed adaptive sensory motor coupling, e.g. down-weighting visual influence when a larger stimulus was provided, but not with the same magnitude as typically developing participants. This indicates that participants with CP have less capability of adaptation.
本研究旨在探讨视觉信息与身体摆动之间的耦合关系，以及脑瘫（CP）患者在这种耦合关系中的适应能力。15 名 CP 儿童和 15 名非 CP 儿童（6-15 岁）需要在移动室内直立。所有儿童首先进行了两次没有房间移动且眼睛睁开或闭着的试验，然后进行了四次房间以 0.2 或 0.5 Hz（峰值速度为 0.6 cm/s）的速度摆动的试验，一次房间以 0.2 Hz（峰值速度为 3.5 cm/s）的速度摆动的试验，最后进行了两次房间再次以 0.2 Hz（峰值速度为 0.6 cm/s）的速度摆动的试验。与非 CP 参与者的耦合相比，CP 参与者将身体摆动与移动室提供的视觉信息耦合。然而，CP 参与者在保持直立位置时表现出更大的身体摆动，并且在身体摆动通过视觉操作引起时摆动更加可变。他们表现出适应性感觉运动耦合，例如在提供更大刺激时减轻视觉影响，但与典型发育参与者的程度不同。这表明 CP 参与者的适应能力较差。
