EMG—EMG coherence in multisite writer’s cramp waveforms – a study with advanced multi-channel EMG system

Venkateshwarla Rama Raju; K. M. Rukmini; R. Borgohain; N. V. Thakor

doi:10.1007/978-3-319-19387-8_267

EMG—EMG coherence in multisite writer’s cramp waveforms – a study with advanced multi-channel EMG system

Venkateshwarla Rama Raju, K. M. Rukmini, R. Borgohain, N. V. Thakor

School of Medicine

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

Abstract

We setup an multichannel EMG amplifier for capturing signals with special reference to Writer’s cramp (WC) from the subject having input impedance greater than 100MegOhm(M). Using the setup we gathered EMG—EMG data signals from WC subjects (diseased conditions) hand muscles: ECR and ECU, FCR and FCU, followed by fifth muscle using a set-of-five innocuous microwire- electrodes (50μ) in each-subject. We then assessed coherence and conducted chi-square (χ²) tests on these data in eight subjects of concordant(C) group and 4 subjects of discordant (D) group of righthand- writing-signal (RHWS) and in left-hand-writing-signal (LHWS)) studied. We compared the difference between flexor-aspect-offorearm and extensor-aspect-of-intrinsic hand-muscles. This showed significant-coherence in both concordant and discordant groups of WC mirror-movements (MMs) in mirror-Dystonia. These observations suggest that the nature of EMG—EMG coherence in dystonic WC may be constrained by the descending-motor-systems, both in terms of their anatomical-distribution and their frequencycharacteristics. In our computation, coherence showed symmetry along the diagonals in graphs. We thus state that, this study showed significant quantifiable EMG differences in the signals/waveforms seen while writing with the right and left hands between those WC subjects with concordant MMs (C group) versus those with discordant MMs (D group).

Original language	English (US)
Title of host publication	World Congress on Medical Physics and Biomedical Engineering, 2015
Editors	David A. Jaffray
Publisher	Springer Verlag
Pages	1096-1100
Number of pages	5
ISBN (Print)	9783319193878
DOIs	https://doi.org/10.1007/978-3-319-19387-8_267
State	Published - 2015
Event	World Congress on Medical Physics and Biomedical Engineering, 2015 - Toronto, Canada Duration: Jun 7 2015 → Jun 12 2015

Publication series

Name	IFMBE Proceedings
Volume	51
ISSN (Print)	1680-0737

Other

Other	World Congress on Medical Physics and Biomedical Engineering, 2015
Country/Territory	Canada
City	Toronto
Period	6/7/15 → 6/12/15

ASJC Scopus subject areas

Bioengineering
Biomedical Engineering

Access to Document

10.1007/978-3-319-19387-8_267

Cite this

Raju, V. R., Rukmini, K. M., Borgohain, R., & Thakor, N. V. (2015). EMG—EMG coherence in multisite writer’s cramp waveforms – a study with advanced multi-channel EMG system. In D. A. Jaffray (Ed.), World Congress on Medical Physics and Biomedical Engineering, 2015 (pp. 1096-1100). (IFMBE Proceedings; Vol. 51). Springer Verlag. https://doi.org/10.1007/978-3-319-19387-8_267

EMG—EMG coherence in multisite writer’s cramp waveforms – a study with advanced multi-channel EMG system. / Raju, Venkateshwarla Rama; Rukmini, K. M.; Borgohain, R. et al.
World Congress on Medical Physics and Biomedical Engineering, 2015. ed. / David A. Jaffray. Springer Verlag, 2015. p. 1096-1100 (IFMBE Proceedings; Vol. 51).

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

Raju, VR, Rukmini, KM, Borgohain, R & Thakor, NV 2015, EMG—EMG coherence in multisite writer’s cramp waveforms – a study with advanced multi-channel EMG system. in DA Jaffray (ed.), World Congress on Medical Physics and Biomedical Engineering, 2015. IFMBE Proceedings, vol. 51, Springer Verlag, pp. 1096-1100, World Congress on Medical Physics and Biomedical Engineering, 2015, Toronto, Canada, 6/7/15. https://doi.org/10.1007/978-3-319-19387-8_267

@inproceedings{2d08bacb032840eab1a237b474ae4c34,

title = "EMG—EMG coherence in multisite writer{\textquoteright}s cramp waveforms – a study with advanced multi-channel EMG system",

abstract = "We setup an multichannel EMG amplifier for capturing signals with special reference to Writer{\textquoteright}s cramp (WC) from the subject having input impedance greater than 100MegOhm(M). Using the setup we gathered EMG—EMG data signals from WC subjects (diseased conditions) hand muscles: ECR and ECU, FCR and FCU, followed by fifth muscle using a set-of-five innocuous microwire- electrodes (50μ) in each-subject. We then assessed coherence and conducted chi-square (χ2) tests on these data in eight subjects of concordant(C) group and 4 subjects of discordant (D) group of righthand- writing-signal (RHWS) and in left-hand-writing-signal (LHWS)) studied. We compared the difference between flexor-aspect-offorearm and extensor-aspect-of-intrinsic hand-muscles. This showed significant-coherence in both concordant and discordant groups of WC mirror-movements (MMs) in mirror-Dystonia. These observations suggest that the nature of EMG—EMG coherence in dystonic WC may be constrained by the descending-motor-systems, both in terms of their anatomical-distribution and their frequencycharacteristics. In our computation, coherence showed symmetry along the diagonals in graphs. We thus state that, this study showed significant quantifiable EMG differences in the signals/waveforms seen while writing with the right and left hands between those WC subjects with concordant MMs (C group) versus those with discordant MMs (D group).",

author = "Raju, {Venkateshwarla Rama} and Rukmini, {K. M.} and R. Borgohain and Thakor, {N. V.}",

note = "Publisher Copyright: {\textcopyright} Springer International Publishing Switzerland 2015.; World Congress on Medical Physics and Biomedical Engineering, 2015 ; Conference date: 07-06-2015 Through 12-06-2015",

year = "2015",

doi = "10.1007/978-3-319-19387-8_267",

language = "English (US)",

isbn = "9783319193878",

series = "IFMBE Proceedings",

publisher = "Springer Verlag",

pages = "1096--1100",

editor = "Jaffray, {David A.}",

booktitle = "World Congress on Medical Physics and Biomedical Engineering, 2015",

}

TY - GEN

T1 - EMG—EMG coherence in multisite writer’s cramp waveforms – a study with advanced multi-channel EMG system

AU - Raju, Venkateshwarla Rama

AU - Rukmini, K. M.

AU - Borgohain, R.

AU - Thakor, N. V.

PY - 2015

Y1 - 2015

N2 - We setup an multichannel EMG amplifier for capturing signals with special reference to Writer’s cramp (WC) from the subject having input impedance greater than 100MegOhm(M). Using the setup we gathered EMG—EMG data signals from WC subjects (diseased conditions) hand muscles: ECR and ECU, FCR and FCU, followed by fifth muscle using a set-of-five innocuous microwire- electrodes (50μ) in each-subject. We then assessed coherence and conducted chi-square (χ2) tests on these data in eight subjects of concordant(C) group and 4 subjects of discordant (D) group of righthand- writing-signal (RHWS) and in left-hand-writing-signal (LHWS)) studied. We compared the difference between flexor-aspect-offorearm and extensor-aspect-of-intrinsic hand-muscles. This showed significant-coherence in both concordant and discordant groups of WC mirror-movements (MMs) in mirror-Dystonia. These observations suggest that the nature of EMG—EMG coherence in dystonic WC may be constrained by the descending-motor-systems, both in terms of their anatomical-distribution and their frequencycharacteristics. In our computation, coherence showed symmetry along the diagonals in graphs. We thus state that, this study showed significant quantifiable EMG differences in the signals/waveforms seen while writing with the right and left hands between those WC subjects with concordant MMs (C group) versus those with discordant MMs (D group).

AB - We setup an multichannel EMG amplifier for capturing signals with special reference to Writer’s cramp (WC) from the subject having input impedance greater than 100MegOhm(M). Using the setup we gathered EMG—EMG data signals from WC subjects (diseased conditions) hand muscles: ECR and ECU, FCR and FCU, followed by fifth muscle using a set-of-five innocuous microwire- electrodes (50μ) in each-subject. We then assessed coherence and conducted chi-square (χ2) tests on these data in eight subjects of concordant(C) group and 4 subjects of discordant (D) group of righthand- writing-signal (RHWS) and in left-hand-writing-signal (LHWS)) studied. We compared the difference between flexor-aspect-offorearm and extensor-aspect-of-intrinsic hand-muscles. This showed significant-coherence in both concordant and discordant groups of WC mirror-movements (MMs) in mirror-Dystonia. These observations suggest that the nature of EMG—EMG coherence in dystonic WC may be constrained by the descending-motor-systems, both in terms of their anatomical-distribution and their frequencycharacteristics. In our computation, coherence showed symmetry along the diagonals in graphs. We thus state that, this study showed significant quantifiable EMG differences in the signals/waveforms seen while writing with the right and left hands between those WC subjects with concordant MMs (C group) versus those with discordant MMs (D group).

UR - http://www.scopus.com/inward/record.url?scp=84944312212&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84944312212&partnerID=8YFLogxK

U2 - 10.1007/978-3-319-19387-8_267

DO - 10.1007/978-3-319-19387-8_267

M3 - Conference contribution

AN - SCOPUS:84944312212

SN - 9783319193878

T3 - IFMBE Proceedings

SP - 1096

EP - 1100

BT - World Congress on Medical Physics and Biomedical Engineering, 2015

A2 - Jaffray, David A.

PB - Springer Verlag

T2 - World Congress on Medical Physics and Biomedical Engineering, 2015

Y2 - 7 June 2015 through 12 June 2015

ER -

EMG—EMG coherence in multisite writer’s cramp waveforms – a study with advanced multi-channel EMG system

Abstract

Publication series

Other

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this