@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",
}