SELF GENERATED CORIOLIS FORCES DURING REACHING

许多神经系统疾病都涉及空间能力的丧失。这类障碍通常涉及运动控制缺陷(例如，到达目标，或邮寄信件)。了解感觉信息是如何用于这些运动控制任务的，这一点很重要。因此，W建议探索在感觉-运动适应改变的情况下，中枢神经系统如何在躯干主动旋转过程中补偿自身产生的科里奥利力，作为研究到达运动的自适应力控制和自我校准的一种方式。此外，我们将研究非机械支持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宫患者的视觉和前庭信息的主要替代品。第一个实验将调查受试者所站的平台的低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，以避免严重破坏平衡和姿势)，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)将被用来评估改变的惯性躯干旋转/平台关系对科里奥利力的补偿。另一项实验将调查在(随后)同时转身和伸展运动中，提供给手的非支撑性引导的系统性移位的作用。在适应过程中，非支撑台在左右转动后备箱时，会被观察者的手轻轻触摸。手平台将系统地旋转，以减弱或放大手/身体的相对旋转量。随后的伸展运动(有或没有身体旋转)将被用来评估改变的惯性手位移/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.