Feedback equilibrium control during human standing
نویسندگان
چکیده
منابع مشابه
Feedback control of unsupported standing.
This paper presents the results of continuing work on feedback control of unsupported standing in paraplegia. Our experimental setup considers a situation in which all joints above the ankle are braced, and stabilising torque at the ankle is generated by stimulation of the plantarflexors. A previous study showed that short periods of unsupported standing with paraplegic subjects could be achiev...
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The fact that we as humans are bipeds and locomote over the ground with one foot in contact (walking), no feet in contact (running), or both feet in contact (standing) creates a major challenge to our balance control system. Because two-thirds of our body mass is located two-thirds of body height above the ground we are an inherently unstable system unless a control system is continuously actin...
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An optimal control system that enables a subject to stand without hand support in the sagittal plane was designed. The subject was considered as a double inverted pendulum structure with a voluntarily controlled degree of freedom in the upper trunk and artificially controlled degree of freedom in the ankle joints. The control system design was based on a minimization of cost function that estim...
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38 39 Distractions affect postural control, but this mechanism is not well understood. Diversion of 40 resources during cognitive stress may lead to decreased motor drive and postural muscle tone. 41 This may appear as decreased postural stiffness, and increased postural sway amplitude. We 42 hypothesized that dual tasking leads to decreased stiffness and increased sway amplitude. 43 Postural s...
متن کاملHumanoid Standing Control: Learning from Human Demonstration
A three-dimensional numerical model of human standing is presented that reproduces the dynamics of simple swaying motions while in double-support. The human model is structurally realistic, having both trunk and two legs with segment lengths and mass distributions defined using human morphological data from the literature. In this investigation, model stability in standing is achieved through t...
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ژورنال
عنوان ژورنال: Biological Cybernetics
سال: 2005
ISSN: 0340-1200,1432-0770
DOI: 10.1007/s00422-005-0004-1