Feedback signals to adjust and control standing posture

J. L. Finley; J. C. Gillette; J. A. Riess; R. J. Triolo; James Abbas

Feedback signals to adjust and control standing posture

J. L. Finley, J. C. Gillette, J. A. Riess, R. J. Triolo, James Abbas

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The long-term goal of this study is to provide people with spinal cord injury with the ability to stand and perform reaching tasks with their hands. Functional neuromuscular stimulation (FNS) systems have been used for standing, but functional capabilities are often limited by poor balance control that necessitates use of the hands. Control strategies that use feedback of biomechanical variables may be able to improve the quality of posture control. This work addresses the issue of selecting which variable to use as feedback in a posture control system. An experimental system was developed to provide visual feedback of the instantaneous center of pressure (CoP) or the instantaneous position of the pelvis (PoP) in the transverse plane. Spinal cord injured subjects that use FNS to stand participated in a set of experiments in which they adjusted their posture based on visual feedback of either the CoP or PoP. Results indicate that subjects could adjust posture with either variable as feedback, but that feedback of the PoP provided control that was more intuitive and the strategies used to adjust posture were more appropriate.

Original language	English (US)
Title of host publication	Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Pages	2386-2387
Number of pages	2
Volume	3
State	Published - 2002
Externally published	Yes
Event	Proceedings of the 2002 IEEE Engineering in Medicine and Biology 24th Annual Conference and the 2002 Fall Meeting of the Biomedical Engineering Society (BMES / EMBS) - Houston, TX, United States Duration: Oct 23 2002 → Oct 26 2002

Other

Other	Proceedings of the 2002 IEEE Engineering in Medicine and Biology 24th Annual Conference and the 2002 Fall Meeting of the Biomedical Engineering Society (BMES / EMBS)
Country/Territory	United States
City	Houston, TX
Period	10/23/02 → 10/26/02

Keywords

Center of pressure
Functional neuromuscular stimulation
Posture control
Visual feedback

ASJC Scopus subject areas

Bioengineering

Cite this

Finley, JL, Gillette, JC, Riess, JA, Triolo, RJ & Abbas, J 2002, Feedback signals to adjust and control standing posture. in Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. vol. 3, pp. 2386-2387, Proceedings of the 2002 IEEE Engineering in Medicine and Biology 24th Annual Conference and the 2002 Fall Meeting of the Biomedical Engineering Society (BMES / EMBS), Houston, TX, United States, 10/23/02.

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title = "Feedback signals to adjust and control standing posture",

abstract = "The long-term goal of this study is to provide people with spinal cord injury with the ability to stand and perform reaching tasks with their hands. Functional neuromuscular stimulation (FNS) systems have been used for standing, but functional capabilities are often limited by poor balance control that necessitates use of the hands. Control strategies that use feedback of biomechanical variables may be able to improve the quality of posture control. This work addresses the issue of selecting which variable to use as feedback in a posture control system. An experimental system was developed to provide visual feedback of the instantaneous center of pressure (CoP) or the instantaneous position of the pelvis (PoP) in the transverse plane. Spinal cord injured subjects that use FNS to stand participated in a set of experiments in which they adjusted their posture based on visual feedback of either the CoP or PoP. Results indicate that subjects could adjust posture with either variable as feedback, but that feedback of the PoP provided control that was more intuitive and the strategies used to adjust posture were more appropriate.",

keywords = "Center of pressure, Functional neuromuscular stimulation, Posture control, Visual feedback",

author = "Finley, {J. L.} and Gillette, {J. C.} and Riess, {J. A.} and Triolo, {R. J.} and James Abbas",

year = "2002",

language = "English (US)",

volume = "3",

pages = "2386--2387",

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AU - Finley, J. L.

AU - Gillette, J. C.

AU - Riess, J. A.

AU - Triolo, R. J.

AU - Abbas, James

PY - 2002

Y1 - 2002

N2 - The long-term goal of this study is to provide people with spinal cord injury with the ability to stand and perform reaching tasks with their hands. Functional neuromuscular stimulation (FNS) systems have been used for standing, but functional capabilities are often limited by poor balance control that necessitates use of the hands. Control strategies that use feedback of biomechanical variables may be able to improve the quality of posture control. This work addresses the issue of selecting which variable to use as feedback in a posture control system. An experimental system was developed to provide visual feedback of the instantaneous center of pressure (CoP) or the instantaneous position of the pelvis (PoP) in the transverse plane. Spinal cord injured subjects that use FNS to stand participated in a set of experiments in which they adjusted their posture based on visual feedback of either the CoP or PoP. Results indicate that subjects could adjust posture with either variable as feedback, but that feedback of the PoP provided control that was more intuitive and the strategies used to adjust posture were more appropriate.

AB - The long-term goal of this study is to provide people with spinal cord injury with the ability to stand and perform reaching tasks with their hands. Functional neuromuscular stimulation (FNS) systems have been used for standing, but functional capabilities are often limited by poor balance control that necessitates use of the hands. Control strategies that use feedback of biomechanical variables may be able to improve the quality of posture control. This work addresses the issue of selecting which variable to use as feedback in a posture control system. An experimental system was developed to provide visual feedback of the instantaneous center of pressure (CoP) or the instantaneous position of the pelvis (PoP) in the transverse plane. Spinal cord injured subjects that use FNS to stand participated in a set of experiments in which they adjusted their posture based on visual feedback of either the CoP or PoP. Results indicate that subjects could adjust posture with either variable as feedback, but that feedback of the PoP provided control that was more intuitive and the strategies used to adjust posture were more appropriate.

KW - Center of pressure

KW - Functional neuromuscular stimulation

KW - Posture control

KW - Visual feedback

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BT - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings

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Y2 - 23 October 2002 through 26 October 2002

ER -

Feedback signals to adjust and control standing posture

Abstract

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Keywords

ASJC Scopus subject areas

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