VALIDATION OF A TIME-SCALING-BASED MODEL FOR REPRESENTATION OF DYNAMICS IN HUMANS AND ITS APPLICATIONS IN REHABILITATION

VALIDATION OF A TIME-SCALING-BASED MODEL FOR REPRESENTATION OF DYNAMICS IN HUMANS AND ITS APPLICATIONS IN REHABILITATION

Bibliographic Details
Main Author: Yadav, Vivek
Language:English
Published: The Ohio State University / OhioLINK 2010
Subjects:
Mechanical Engineering
Robotics
Kinematics
Biomechanics
Human motor control
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=osu1281968186
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-osu12819681862021-08-03T06:00:31Z VALIDATION OF A TIME-SCALING-BASED MODEL FOR REPRESENTATION OF DYNAMICS IN HUMANS AND ITS APPLICATIONS IN REHABILITATION Yadav, Vivek Mechanical Engineering Robotics Kinematics Biomechanics Human motor control <p>The generation of muscle forces to perform various human movement tasks is a complex control problem whose mathematical solution requires complex formulations due to redundancy in muscleactuators. This problem becomes increasingly difficult because the same movement can begenerated by following different joint coordination strategies. Literature suggests that the humanbrain resolves these redundancies using an optimization-based approach. Such approaches, ingeneral, require systems with large computation capabilities to generate a feasiblesolution. The human brain, however, has seemingly developed a method to solve this problem in a simplermanner. This study proposes a simpler time-scaling-based mathematical model of the dynamics of humanmovement that eliminates the need for the optimization routines. It is proposedthat humans separate the muscle forces required to compensate for gravitational effects and togenerate motion. In the framework of the proposed model, the muscle forces required to generate motion for one given speed are scaled to generate the same motion at different speeds. This theory of movement control is applicable under the following three assumptions: 1- Humans have the ability to separate muscle forces required for compensation of gravitational effects from total muscle forces.2- Time scaling is a characteristic of human movement. 3- The scaling-based solution satisfies the conditions of optimality. </p><p>Various aspects of this theory of movement control are tested by applying force fields with a custom robotic device. The adaptation of the subjects to the force fields is used to validate the theory.Experiments conducted with 54 healthy individuals provide evidence suggesting that humans may beseparating muscle forces required to compensate for gravity from the total muscle forces required to perform motion. Theexperiments also suggest that scaling is a primary characteristic of human movement that ismanifested as various kinematic invariants for human movement reported in the literature.Methods are developed with the same device for assessing rehabilitation during the acute phaseof recovery from stroke. Various metrics are developed with the device, and their applicability was tested bycomparing arm movement patterns of 8 older and 8 younger healthy subjects. Preliminary resultswith 3 stroke patients show that the methods developed can be used toassess post-stroke recovery. Application of the model proposed for classifying strokeimpairments is proposed, and its applicability in classification and rehabilitation of lost motorfunction remains to be tested in a clinical setting with experiments involving stroke patients.</p> 2010-10-25 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1281968186 http://rave.ohiolink.edu/etdc/view?acc_num=osu1281968186 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Mechanical Engineering
Robotics
Kinematics
Biomechanics
Human motor control
spellingShingle Mechanical Engineering
Robotics
Kinematics
Biomechanics
Human motor control
Yadav, Vivek
VALIDATION OF A TIME-SCALING-BASED MODEL FOR REPRESENTATION OF DYNAMICS IN HUMANS AND ITS APPLICATIONS IN REHABILITATION
author Yadav, Vivek
author_facet Yadav, Vivek
author_sort Yadav, Vivek
title VALIDATION OF A TIME-SCALING-BASED MODEL FOR REPRESENTATION OF DYNAMICS IN HUMANS AND ITS APPLICATIONS IN REHABILITATION
title_short VALIDATION OF A TIME-SCALING-BASED MODEL FOR REPRESENTATION OF DYNAMICS IN HUMANS AND ITS APPLICATIONS IN REHABILITATION
title_full VALIDATION OF A TIME-SCALING-BASED MODEL FOR REPRESENTATION OF DYNAMICS IN HUMANS AND ITS APPLICATIONS IN REHABILITATION
title_fullStr VALIDATION OF A TIME-SCALING-BASED MODEL FOR REPRESENTATION OF DYNAMICS IN HUMANS AND ITS APPLICATIONS IN REHABILITATION
title_full_unstemmed VALIDATION OF A TIME-SCALING-BASED MODEL FOR REPRESENTATION OF DYNAMICS IN HUMANS AND ITS APPLICATIONS IN REHABILITATION
title_sort validation of a time-scaling-based model for representation of dynamics in humans and its applications in rehabilitation
publisher The Ohio State University / OhioLINK
publishDate 2010
url http://rave.ohiolink.edu/etdc/view?acc_num=osu1281968186
work_keys_str_mv AT yadavvivek validationofatimescalingbasedmodelforrepresentationofdynamicsinhumansanditsapplicationsinrehabilitation
_version_ 1719429296607461376

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