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首页> 外文期刊>Neuroscience: An International Journal under the Editorial Direction of IBRO >COORDINATION OF THE HEAD WITH RESPECT TO THE TRUNK, PELVIS, AND LOWER LEG DURING QUIET STANCE AFTER VESTIBULAR LOSS
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COORDINATION OF THE HEAD WITH RESPECT TO THE TRUNK, PELVIS, AND LOWER LEG DURING QUIET STANCE AFTER VESTIBULAR LOSS

机译：在前庭丢失后的安静状态下，头部与躯干，骨盆和下肢的协调

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摘要

To maintain the head stable on the trunk during upright stance, the CNS can predominantly employ three kinds of sensory inputs: vestibular, visual and neck proprioceptive. Depending on stance conditions, the contribution of these inputs to balance control can vary (Black et al., 1983; Allum and Honegger, 1998; Peterka and Loughlin, 2004; Allum et al., 2008). For example, with eyes closed (EC), the relative contribution of proprioceptive and vestibular inputs will be higher. The relative contributions of sensory inputs will be dependent on how the body moves during a postural task. Until recently, it was generally accepted that during quiet stance, body sway was like that of an inverted pendulum (Fitzpatrick et al., 1992; Pinter et al., 2008) with motion only about the ankle joint. In this single segment model, ankle proprioception is assumed to be the main contributor to balance control. The inverted pendulum model is, however, an oversimplification. By demonstrating that not only ankle movement, but also hip joint motion is important for balance control during quiet stance (Pinter et al., 2008), evidence was accumulated that the single segment model could not adequately explain balance control during quiet upright stance. It was observed that both ankle and hip strategies are present simultaneously during quiet stance in separate sway frequency bands with an ankle strategy dominant for low frequencies (Kuo, 1995; Creath et al., 2005; Hsu et al., 2007; Pinter et al., 2008; Horlings et al., 2009).
机译：为了在直立姿势期间保持头部稳定，CNS可以主要采用三种感觉输入：前庭，视觉和颈部本体感受。根据立场条件，这些投入对平衡控制的贡献可能会有所不同（Black等，1983; Allum和Honegger，1998; Peterka和Loughlin，2004; Allum等，2008）。例如，闭眼（EC）时，本体感受和前庭输入的相对贡献会更高。感觉输入的相对贡献将取决于姿势任务期间身体如何运动。直到最近，人们普遍认为，在安静的姿势下，身体摇摆就像倒立摆一样（Fitzpatrick等，1992; Pinter等，2008），只在踝关节周围运动。在此单段模型中，踝关节本体感受被认为是平衡控制的主要因素。但是，倒立摆模型过于简单。通过证明不仅踝关节运动，而且髋关节运动对于安静姿势期间的平衡控制都很重要（Pinter等人，2008），积累的证据表明单节模型不能充分解释安静姿势时的平衡控制。有人观察到，在安静的姿势中，踝关节和髋关节策略在单独的摇摆频带中同时存在，而踝关节策略则以低频为主（Kuo，1995; Creath et al。，2005; Hsu et al。，2007; Pinter et al。 ，2008; Horlings等，2009）。

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