Organizing sensory information for postural control in altered sensory environments
Organizing sensory information for postural control in altered sensory environments
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DOI：
10.1006/jtbi.1996.0101
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发表时间：
1996-06-07
影响因子：
2
通讯作者：
Nashner, LM
中科院分区：
文献类型：
--
作者：
McCollum, G;Shupert, CL;Nashner, LM
尽管躯体感觉或视觉反馈或前庭反馈因外周前庭紊乱而扭曲，健康的人类受试者仍能保持足够的平衡。虽然目前还不清楚这种感觉运动整合任务是如何实现的，但神经系统协调来自多个感觉系统的信息，在不同的感觉环境中产生不同的运动命令。这些协调感觉信息和运动指令的不同方式可以被认为是“感觉运动状态”。本文分析了神经系统作为状态间转换的逻辑结构在状态间分配体位摇摆监测的方式。对转换结构的形式进行了规定，并与有限状态机进行了区分。通过对健康受试者和三组外周前庭疾病患者的姿势控制实验观察，证实了神经系统可以通过过渡结构来维持平衡的假设。(C) 1996学术出版社有限公司
Healthy human subjects can maintain adequate balance despite distorted somatosensory or visual feedback or vestibular feedback distorted by a peripheral vestibular disorder. Although it is not precisely known how this sensorimotor integration task is achieved, the nervous system coordinates information from multiple sensory systems to produce motor commands differently in different sensory environments. These different ways of coordinating sensory information and motor commands can be thought of as ''sensorimotor states''. The way the nervous system distributes the monitoring of postural sway among states is analysed in this paper as a logical structure of transitions between states. The form of the transition structure is specified and distinguished from a finite state machine. The hypothesis that the nervous system could use a transition structure to maintain balance is tested by developing transition structures which are consistent with a set of experimental observations of postural control in healthy subjects and three groups of patients with peripheral vestibular disease. (C) 1996 Academic Press Limited