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Multi-stimulus multi-response posturography

Johansson, R LU ; Magnusson, M LU ; Fransson, P A LU and Karlberg, M LU (2001) In Mathematical Biosciences 174(1). p.41-59
Abstract

In this study a method for the analysis of simultaneous multiple measurements of kinematics and stabilizing forces related to human postural dynamics is proposed. Each subject in a group of normal subjects (n=10) was tested with eyes-open and eyes-closed with simultaneous but uncorrelated vestibular and proprioceptive stimuli in order to investigate the contributions of individual sensory feedback loops. Statistical analysis was made by means of multi-input multi-output identification of a transfer function from stimuli to stabilizing forces of the feet and the resulting body position, the transfer function being compatible with a biomechanical model formulated as a stabilized segmented inverted pendulum subject to feedback of body sway... (More)

In this study a method for the analysis of simultaneous multiple measurements of kinematics and stabilizing forces related to human postural dynamics is proposed. Each subject in a group of normal subjects (n=10) was tested with eyes-open and eyes-closed with simultaneous but uncorrelated vestibular and proprioceptive stimuli in order to investigate the contributions of individual sensory feedback loops. Statistical analysis was made by means of multi-input multi-output identification of a transfer function from stimuli to stabilizing forces of the feet and the resulting body position, the transfer function being compatible with a biomechanical model formulated as a stabilized segmented inverted pendulum subject to feedback of body sway and position. Each individual model estimated is effective in predicting a subject's response to new stimuli and in describing the interacting effects of stimuli on body kinetics. The proposed methodology responds to the current needs of data analysis of multi-stimulus multi-response experiments.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Adolescent, Adult, Algorithms, Biomechanical Phenomena, Feedback, Female, Humans, Male, Mathematics, Middle Aged, Models, Biological, Posture, Psychomotor Performance, Journal Article, Research Support, Non-U.S. Gov't
in
Mathematical Biosciences
volume
174
issue
1
pages
19 pages
publisher
Elsevier
ISSN
0025-5564
DOI
10.1016/S0025-5564(01)00075-X
language
English
LU publication?
yes
id
db33ddb8-efee-4e14-aff0-6c4fba834ac4
date added to LUP
2017-05-03 12:15:15
date last changed
2018-08-02 04:00:34
@article{db33ddb8-efee-4e14-aff0-6c4fba834ac4,
  abstract     = {<p>In this study a method for the analysis of simultaneous multiple measurements of kinematics and stabilizing forces related to human postural dynamics is proposed. Each subject in a group of normal subjects (n=10) was tested with eyes-open and eyes-closed with simultaneous but uncorrelated vestibular and proprioceptive stimuli in order to investigate the contributions of individual sensory feedback loops. Statistical analysis was made by means of multi-input multi-output identification of a transfer function from stimuli to stabilizing forces of the feet and the resulting body position, the transfer function being compatible with a biomechanical model formulated as a stabilized segmented inverted pendulum subject to feedback of body sway and position. Each individual model estimated is effective in predicting a subject's response to new stimuli and in describing the interacting effects of stimuli on body kinetics. The proposed methodology responds to the current needs of data analysis of multi-stimulus multi-response experiments.</p>},
  author       = {Johansson, R and Magnusson, M and Fransson, P A and Karlberg, M},
  issn         = {0025-5564},
  keyword      = {Adolescent,Adult,Algorithms,Biomechanical Phenomena,Feedback,Female,Humans,Male,Mathematics,Middle Aged,Models, Biological,Posture,Psychomotor Performance,Journal Article,Research Support, Non-U.S. Gov't},
  language     = {eng},
  number       = {1},
  pages        = {41--59},
  publisher    = {Elsevier},
  series       = {Mathematical Biosciences},
  title        = {Multi-stimulus multi-response posturography},
  url          = {http://dx.doi.org/10.1016/S0025-5564(01)00075-X},
  volume       = {174},
  year         = {2001},
}