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COHERENTLY INTERACTING DYNAMICS IN THE NEUROMUSCULAR
SYSTEM
by
Srideep Musuvathy
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(ELECTRICAL ENGINEERING)
December 2011
Copyright 2011 Srideep Musuvathy
Object Description
| Title | Coherently interacting dynamics in the neuromuscular system |
| Author | Musuvathy, Srideep S. |
| Author email | musuvath@usc.edu;srideep.musuvathy@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Electrical Engineering |
| School | Viterbi School of Engineering |
| Date defended/completed | 2011-10-26 |
| Date submitted | 2011-11-29 |
| Date approved | 2011-11-29 |
| Restricted until | 2011-11-29 |
| Date published | 2011-11-29 |
| Advisor (committee chair) | Jonckheere, Edmond A. |
| Advisor (committee member) |
Kosko, Bart A. Haydn, Nicolai T. A. |
| Abstract | This thesis settles the open question of whether or not neuromuscular dynamics is mixing by showing evidence of both scenarios and demonstrates remarkable coherence properties between the dynamics in the neck and sacrum in healthy subjects and the absence of this feature in quadriplegic subjects. These results are shown from the analysis of data collected during an electrophysiological phenomenon running up and down the spine, elicited by light pressure contact at very precise points and thereafter taking the external appearance of an undulatory motion of the spine. This wave, called the spinal wave, results in a traveling and finally a standing wave pattern in the spine. ❧ This research uses ergodic theory methods to analyze surface Electromyographic (sEMG) data during the spinal wave. The major tool used in this study is a construction known as special Euclidean (SE) extension. In this approach, the neuromuscular system is treated an abstract dynamical system and the sEMG sensors as observables. Properties of the system are analyzed from this observed data using special Euclidean extension of order 2. ❧ These results, obtained using SE(2) analysis, are consistent with previous statistical studies of the spinal wave phenomenon. Finally, the thesis proposes some plausible models that might result in the spinal wave phenomenon. |
| Keyword | coherence; neuromuscular system; spine; spinal cord; spinal wave; chaos; dynamical systems; mixing; 0-1 test; time series analysis; special Euclidean extensions; extensions of dynamical systems; interacting dynamical systems; coupled dynamical Systems |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m |
| Contributing entity | University of Southern California |
| Rights | Musuvathy, Srideep S. |
| Physical access | The author retains rights to his/her dissertation, thesis or other graduate work according to U.S. copyright law. Electronic access is being provided by the USC Libraries in agreement with the author, as the original true and official version of the work, but does not grant the reader permission to use the work if the desired use is covered by copyright. It is the author, as rights holder, who must provide use permission if such use is covered by copyright. The original signature page accompanying the original submission of the work to the USC Libraries is retained by the USC Libraries and a copy of it may be obtained by authorized requesters contacting the repository e-mail address given. |
| Repository name | University of Southern California Digital Library |
| Repository address | USC Digital Library, University of Southern California, University Park Campus MC 7002, 106 University Village, Los Angeles, California 90089-7002, USA |
| Repository email | cisadmin@lib.usc.edu |
| Archival file | uscthesesreloadpub_Volume6/etd-MusuvathyS-442-0.pdf |
Description
| Title | Page 1 |
| Contributing entity | University of Southern California |
| Repository email | cisadmin@lib.usc.edu |
| Full text | COHERENTLY INTERACTING DYNAMICS IN THE NEUROMUSCULAR SYSTEM by Srideep Musuvathy A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (ELECTRICAL ENGINEERING) December 2011 Copyright 2011 Srideep Musuvathy |
