Time-frequency representations of the sternocleidomastoid muscle electromyographic signal recorded with concentric ring electrodes
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Tipus de documentText en actes de congrés
Data publicació2016
EditorInstitute of Electrical and Electronics Engineers (IEEE)
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Abstract
The use of non-invasive methods for the study of respiratory muscle signals can provide clinical
information for the evaluation of the respiratory muscle function. The aim of this study was to evaluate time-frequency
characteristics of the electrical activity of the sternocleidomastoid muscle recorded superficially by means of concentric
ring electrodes (CREs) in a bipolar configuration. The CREs enhance the spatial resolution, attenuate interferences, as
the cardiac activity, and also simplify the orientation problem associated to the electrode location. Five healthy subjects
underwent a respiratory load test in which an inspiratory load was imposed during the inspiratory phase. During the
test, the electromyographic signal of the sternocleidomastoid muscle (EMGsc) and the inspiratory mouth pressure
(Pmouth) were acquired. Time-frequency characteristics of the EMGsc signal were analyzed by means of eight timefrequency
representations (TFRs): the spectrogram (SPEC), the Morlet scalogram (SCAL), the Wigner-Ville distribution
(WVD), the Choi-Williams distribution (CHWD), two generalized exponential distributions (GED1 and GED2), the Born-
Jordan distribution (BJD) and the Cone-Kernel distribution (CKD). The instantaneous central frequency of the EMGsc
showed an increasing behavior during the inspiratory cycle and with the increase of the inspiratory load. The bilinear
TFRs (WVD, CHWD, GEDs and BJD) were less sensitive to cardiac activity interference than classical TFRs (SPEC and SCAL). The GED2 was the TFR that shown the best results for the characterization of the instantaneous central
frequency of the EMGsc.
CitacióEstrada, L., Torres, A., Garcia, J., Sarlabous, L., Prats, G., Jane, R. Time-frequency representations of the sternocleidomastoid muscle electromyographic signal recorded with concentric ring electrodes. A: Annual International Conference of the IEEE Engineering in Medicine and Biology Society. "2016 38th annual international conference of the IEEE Engineering in Medicine and Biology Society (EMBC)". Orlando, FL: Institute of Electrical and Electronics Engineers (IEEE), 2016, p. 3785-3788.
ISBN978-1-4577-0220-4
Versió de l'editorhttp://ieeexplore.ieee.org/document/7591552/?reload=true
Fitxers | Descripció | Mida | Format | Visualitza |
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EMBC16 Estrada_postprint.pdf | 4,360Mb | Accés restringit |