SELF GENERATED CORIOLIS FORCES DURING REACHING

许多神经系统疾病涉及空间能力的丧失。这种疾病通常涉及运动控制缺陷（例如，（一个目标，一封信）。重要的是要了解感觉信息是如何用于这些运动控制任务的。因此，我们建议探索中枢神经系统如何补偿自我产生的科里奥利力在主动躯干旋转改变的感觉运动适应作为一种方式来研究自适应力控制和自我校准的达到运动。此外，我们将研究非机械性支持性触摸在稳定姿势和平衡方面的使用，这通常是视力丧失或无功能迷路患者视觉和前庭信息的主要替代品。第一个实验将研究受试者站立的平台的系统位移如何影响随后的伸展运动。在适应过程中，平台将系统地旋转（递增，以避免平衡和姿势的严重破坏），以将惯性躯干旋转量减少+，或将惯性旋转量增加一倍。随后的伸展运动（有和没有身体旋转）将用于评估通过改变惯性躯干旋转/平台关系对科里奥利力的补偿。另一个实验将研究在（随后的）同时转动和伸展运动期间提供给手的非支持性引导的系统移位的作用。在适应过程中，观察者的手将在左右转动躯干时轻轻触摸非支撑平台。手平台将系统地旋转以衰减或放大相对手/身体旋转的量。随后的到达运动（有和没有身体旋转）将用于评估通过改变惯性手位移/平台关系对科里奥利力的补偿。

Many neurological disorders involve the loss of spatial abilities. Such disorders will often involve deficits in motor control (e.g., reaching to a target, or posting a letter). It is important to understand how sensory information is utilized for these motor control tasks. W therefore propose to explore how the central nervous system compensates for self generate Coriolis forces during active trunk rotation under altered sensory-motor adaptation as a way to investigate adaptive force control and self- calibration of reaching movement. In addition, we will investigate the use of non-mechanistically supportive touch in stabilizing posture and balance, which is often a primary replacement for visual and vestibular information in patients with vision loss or a non-functional labyrinth. The first experiment will investigate how low systematic displacement of a platform, upon which the subject stands, affects subsequent reaching movements. During adaptation, the platform will systematically rotate (incrementally, to avoid gross disruption of balance and posture) to either reduce the amount of inertial torso rotation by +, or to double the mount of inertial rotation. Subsequent reaching motions (with and without body rotation) will be used to assess the compensation for Coriolis forces by the altered inertial torso rotation/platform relationship. Another experiment will investigate the role of systematic displacement of non- supportive guide provided to the hand during (subsequent) simultaneous turning and reaching movements. During adaptation, the non-supportive platform will be touched lightly by the hand of the observer while turning the trunk left and right. The hand platform will systematically rotate to either attenuate or amplify the amount of relative hand/body rotation. Subsequent reaching motions (with and without body rotation) will be used to assess the compensation for Coriolis forces by the altered inertial hand displacement/platform relationship.