The control of posture and movement

当一个人站在房间中央时，即使任务是站着不动，他们也会摆动。如果一个人被提交到一个减少的感觉条件（例如无视觉），我们通常观察到的幅度和速度的姿势振荡的增加。解释这些振荡的一种常见解释是，增加的摇摆是减少感官输入的直接结果。因此，增加的振荡与较不稳定的姿势相关联。另一种观点是，增加的摇摆反映了一种通过刺激感觉受体来获得额外信息的手段。这两种不同的观点有时很难调和，需要新的协议来提供控制过程的见解，可以解释姿势振荡的性质。这些知识对于建立一个连贯的理论框架来理解在各种感觉和姿势环境中观察到的摇摆反应，并提出新的干预措施来优化平衡控制至关重要。

When a person stands in the middle of a room, they oscillate even if the task is to stand still. If the person is submitted to a reduced sensory condition (e.g. no-vision), we generally observed an increase in the amplitude and speed of the postural oscillations. A common interpretation for explaining these oscillations is that the increased sway is a direct consequence of reduced sensory inputs. Hence, the increased oscillations are associated with a less stable posture. An alternative viewpoint is that the increased sway rather reflects a mean to gain additional information by stimulating sensory receptors. These two different views are sometimes difficult to reconcile and new protocols are needed to provide insights into the control processes that could explain the nature of postural oscillations. This knowledge is essential for developing a coherent theoretical framework for understanding sway responses observed in various sensory and postural contexts, and to propose new interventions to optimize balance control.