Effects of pulse modulation on FES-induced ankle dorsiflexion in adults with spastic diplegia

Ivan Y. W. Su; Daniel H. K. Chow; Malcolm H. Granat; Bernard A. Conway

doi:10.1109/IEMBS.2000.900592

Effects of pulse modulation on FES-induced ankle dorsiflexion in adults with spastic diplegia

Ivan Y. W. Su, Daniel H. K. Chow, Malcolm H. Granat, Bernard A. Conway

Biomedical Engineering

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

Abstract

The application of function electrical stimulation (FES) has recently been extended to patients with cerebral palsy. To ensure a functional gain from the electrically elicited movement, a reproducible response with sufficient magnitude is desired. In this study, the effects of varying pulse parameters on the motor response were investigated. FES-induced ankle dorsiflexion of seven adults with spastic diplegia under constant current stimulation buth with varied pulsewidths and frequencies was measured. Stimulation pattern that produced a desired motor response was determined for each individual subject. Despite the diversity of the conditions caused by cerebral palsy, a common trend was observed from the identified patterns. The characterization results suggested that the FES-induced ankle dorsiflexion in adults with spastic diplegia could be controlled by employing a constant current with frequency at 20 or 30 Hz using pulsewidth modulation ranged from 100 to 400 μs.

Original language	English
Title of host publication	Proceedings of the 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Editors	John D. Enderle
Place of Publication	Piscataway, NJ
Publisher	IEEE
Pages	2267-2270
Number of pages	4
ISBN (Print)	0780364651
DOIs	https://doi.org/10.1109/IEMBS.2000.900592
Publication status	Published - 6 Aug 2002
Event	22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Navy Pier Convention Center, Chicago, United States Duration: 23 Jul 2000 → 28 Jul 2000

Conference

Conference	22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Country/Territory	United States
City	Chicago
Period	23/07/00 → 28/07/00

Keywords

cerebral palsy
electrical stimulation
rehabilitation

Access to Document

10.1109/IEMBS.2000.900592

Cite this

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title = "Effects of pulse modulation on FES-induced ankle dorsiflexion in adults with spastic diplegia",

abstract = "The application of function electrical stimulation (FES) has recently been extended to patients with cerebral palsy. To ensure a functional gain from the electrically elicited movement, a reproducible response with sufficient magnitude is desired. In this study, the effects of varying pulse parameters on the motor response were investigated. FES-induced ankle dorsiflexion of seven adults with spastic diplegia under constant current stimulation buth with varied pulsewidths and frequencies was measured. Stimulation pattern that produced a desired motor response was determined for each individual subject. Despite the diversity of the conditions caused by cerebral palsy, a common trend was observed from the identified patterns. The characterization results suggested that the FES-induced ankle dorsiflexion in adults with spastic diplegia could be controlled by employing a constant current with frequency at 20 or 30 Hz using pulsewidth modulation ranged from 100 to 400 μs.",

keywords = "cerebral palsy, electrical stimulation, rehabilitation",

author = "Su, {Ivan Y. W.} and Chow, {Daniel H. K.} and Granat, {Malcolm H.} and Conway, {Bernard A.}",

year = "2002",

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doi = "10.1109/IEMBS.2000.900592",

language = "English",

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pages = "2267--2270",

editor = "Enderle, {John D.}",

booktitle = "Proceedings of the 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society",

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note = "22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society ; Conference date: 23-07-2000 Through 28-07-2000",

}

Su, IYW, Chow, DHK, Granat, MH & Conway, BA 2002, Effects of pulse modulation on FES-induced ankle dorsiflexion in adults with spastic diplegia. in JD Enderle (ed.), Proceedings of the 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, Piscataway, NJ, pp. 2267-2270, 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society , Chicago, Illinois, United States, 23/07/00. https://doi.org/10.1109/IEMBS.2000.900592

Effects of pulse modulation on FES-induced ankle dorsiflexion in adults with spastic diplegia. / Su, Ivan Y. W.; Chow, Daniel H. K.; Granat, Malcolm H. et al.
Proceedings of the 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society. ed. / John D. Enderle. Piscataway, NJ: IEEE, 2002. p. 2267-2270.

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

TY - GEN

T1 - Effects of pulse modulation on FES-induced ankle dorsiflexion in adults with spastic diplegia

AU - Su, Ivan Y. W.

AU - Chow, Daniel H. K.

AU - Granat, Malcolm H.

AU - Conway, Bernard A.

PY - 2002/8/6

Y1 - 2002/8/6

N2 - The application of function electrical stimulation (FES) has recently been extended to patients with cerebral palsy. To ensure a functional gain from the electrically elicited movement, a reproducible response with sufficient magnitude is desired. In this study, the effects of varying pulse parameters on the motor response were investigated. FES-induced ankle dorsiflexion of seven adults with spastic diplegia under constant current stimulation buth with varied pulsewidths and frequencies was measured. Stimulation pattern that produced a desired motor response was determined for each individual subject. Despite the diversity of the conditions caused by cerebral palsy, a common trend was observed from the identified patterns. The characterization results suggested that the FES-induced ankle dorsiflexion in adults with spastic diplegia could be controlled by employing a constant current with frequency at 20 or 30 Hz using pulsewidth modulation ranged from 100 to 400 μs.

AB - The application of function electrical stimulation (FES) has recently been extended to patients with cerebral palsy. To ensure a functional gain from the electrically elicited movement, a reproducible response with sufficient magnitude is desired. In this study, the effects of varying pulse parameters on the motor response were investigated. FES-induced ankle dorsiflexion of seven adults with spastic diplegia under constant current stimulation buth with varied pulsewidths and frequencies was measured. Stimulation pattern that produced a desired motor response was determined for each individual subject. Despite the diversity of the conditions caused by cerebral palsy, a common trend was observed from the identified patterns. The characterization results suggested that the FES-induced ankle dorsiflexion in adults with spastic diplegia could be controlled by employing a constant current with frequency at 20 or 30 Hz using pulsewidth modulation ranged from 100 to 400 μs.

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ER -

Effects of pulse modulation on FES-induced ankle dorsiflexion in adults with spastic diplegia

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