THE DECELERATION RESPONSE TO TRANSIENT PERTURBATION OF UPRIGHT STANCE
THE DECELERATION RESPONSE TO TRANSIENT PERTURBATION OF UPRIGHT STANCE
复制标题
DOI：
10.1016/0304-3940(94)91066-9
复制
发表时间：
1994-07-04
影响因子：
2.5
通讯作者：
MAKI, BE
中科院分区：
文献类型：
--
作者：
MCILROY, WE;MAKI, BE
表征的姿势扰动由于一个短暂的支持表面位移的加速和减速事件导致一个新的框架，用于理解控制的稳定响应。本研究记录了存在的“减速反应”，这是以前没有报道过的，并探讨了这种反应的控制，通过不同的可预测性的时间和模式的支持表面减速。控制功能相关的受试者预测减速的能力被暴露，部分，包括新的“三相”扰动，其中正常的减速阶段被取代的重新加速。在所有试验中，受试者对减速的开始表现出明显的反应。预测减速的时间和模式的能力有显着的影响，对“减速反应”，以及“强直”肌肉激活之前的减速发作。
Characterizing the postural perturbation due to a transient support-surface displacement in terms of acceleration and deceleration events leads to a new framework for understanding the control of the stabilizing response. This study documents the existence of a 'deceleration response', which has not been reported previously, and explores the control of this response by varying the predictability of the timing and pattern of support-surface deceleration. Control features related to the capacity of the subject to predict deceleration were exposed, in part, by including novel 'tri-phasic' perturbations, in which the normal deceleration phase was replaced by a re-acceleration. In all trials, subjects showed a marked response to the onset of deceleration. The capacity to predict the timing and pattern of deceleration had a significant influence on the 'deceleration response', as well as the 'tonic' muscle activation that preceded the onset of deceleration.