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, Nitish V Thakor

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish (US)
Title of host publicationIFMBE Proceedings
PublisherSpringer Verlag
Pages1096-1100
Number of pages5
Volume51
ISBN (Print)9783319193878
DOIs
StatePublished - 2015
EventWorld Congress on Medical Physics and Biomedical Engineering, 2015 - Toronto, Canada
Duration: Jun 7 2015Jun 12 2015

Other

OtherWorld Congress on Medical Physics and Biomedical Engineering, 2015
CountryCanada
CityToronto
Period6/7/156/12/15

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Mirrors
Muscle
Electrodes

ASJC Scopus subject areas

  • Biomedical Engineering
  • Bioengineering

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 IFMBE Proceedings (Vol. 51, pp. 1096-1100). 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.; Thakor, Nitish V.

IFMBE Proceedings. Vol. 51 Springer Verlag, 2015. p. 1096-1100.

Research output: Chapter in Book/Report/Conference proceedingConference 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 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
Raju, Venkateshwarla Rama ; Rukmini, K. M. ; Borgohain, R. ; Thakor, Nitish V. / EMG—EMG coherence in multisite writer’s cramp waveforms – a study with advanced multi-channel EMG system. IFMBE Proceedings. Vol. 51 Springer Verlag, 2015. pp. 1096-1100
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