Effect of electrode location on EMG signal envelope in leg muscles during gait

Campanini, Isabella; Merlo, Andrea; Degola, P; Merletti, Roberto; Vezzosi, G.; Farina, Dario

doi:10.1016/j.jelekin.2006.06.001

Cited by 107 publications

(87 citation statements)

References 19 publications

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“…The discharge rates, signal amplitude, spectral analysis could be investigated to estimate the neural control strategies involved in the muscles management. 27 These instrumental assessments should be performed applying the correct protocols; in fact, the myoelectric activity signal may vary due to many factors such as change in the electrode location, change in the tissue properties, tissue temperature, muscle resting length, velocity of contraction and fiber type [27][28][29][30] . In the last 30 years the effect of electrodes position on conduction velocity estimation (CV), amplitude and spectral variables of the surface EMG has been addressed in a number of methodological and clinical publications taking into account muscles (or groups of muscles) ranging from the masticatory muscles to the muscles of the shoulder, of the arm and leg too 31 .…”

Section: Discussionmentioning

confidence: 99%

Standardized Electromyographic Indexes Allow a Reliable Measurement of Masticatory Muscles Function

Rosati¹,

Semelewa²,

Сатыго³

et al. 2016

EDUJ

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Introduction: Surface electromyography (sEMG) allows the quantitative and qualitative analysis of muscles recruitment and it is a method currently used in research and in the clinical practice. Considering that sEMG assesses the portion of muscular electrical activity that reaches cutaneous surface, a well-standardized protocol should be used, allowing to remove (or reduce) technical and biological artefacts. Methodology: To evaluate the repeatability of the normalized indexes describing masticatory muscles sEMG, the standardized cutaneous myoelectric activity of Temporalis Anterior and Masseter muscles was recorded twice during a one week interval (Acquisition sessions T1 and T2) in 20 young healthy adults. The data obtained during T1 and T2 were compared. A clinical case was shown as an example of clinical sEMG application. Results: No significant differences in the standardized indexes elaborated by sEMG signals of T1 and T2 acquisition sessions were found, strengthening the effectiveness of the standardization procedure. Conclusion: sEMG indexes allow the evaluation of occlusal-induced proprioceptive mediated muscular recruitment in a reliable way. This measurement protocol can be clinically applied to estimate the muscular adaption to new occlusal conditions or to re-establish physiological muscular coordination.

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Section: Discussionmentioning

confidence: 99%

Standardized Electromyographic Indexes Allow a Reliable Measurement of Masticatory Muscles Function

Rosati¹,

Semelewa²,

Сатыго³

et al. 2016

EDUJ

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“…The methods of information extraction about the representative features of the sEMG recordings are based on calculation of their coefficients of variation and autoregression, and on an analysis of their time-frequency and time-space characteristics [48]. Classification of signals can be performed with a variety of methods including linear discriminate analysis, Bayesian statistics, vector analysis, and the artificial neural network method [41,[49][50][51][52][53][54][55].…”

Section: Historical Backgroundmentioning

confidence: 99%

Surface Electromyography: Its Role and Potential in the Development of Exoskeleton (Review)

Rukina¹,

Кузнецов²,

Борзиков³

et al. 2016

Sovrem Tehnol Med

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This study evaluates the effectiveness of superficial electromyography (sEMG) in the development of biocontrolled exoskeletons, through an analysis based on the findings of foreign and domestic literature on the subject. A brief historical background is provided. The features reviewed include the registration, processing and analysis of the signals from superficial electromyograms in respect of biocontrol. It is demonstrated that testing exoskeleton devices in association with sEMG provides an informative analytical tool for assisting in the optimization of exoskeleton design in order to reduce the metabolic "cost" of locomotion. The use of signals from superficial myograms during the operation of an exoskeleton have also been reviewed. The role of myography in studies of the fundamental physical processes involved while adapting to an exoskeleton is described. We conclude that the potential for the use of sEMG in respect of biocontrol is related to the new technical and mathematical possibilities available for the registration, transformation and classification of bioelectrical signals from the muscles, and the isolation of their patterns of muscular activity.

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“…The side advantage is to use only one recording channel. Campanini et al [9] recorded five muscles of the leg of 10 normal adults walking at their comfortable speed with matrix of ECG electrodes spaced out 2 cm apart. From EMG envelope they concluded "... the estimate of muscle activation intensity during gait from surface EMG is variable with location of the electrodes while timing of muscle activity is more robust to electrode displacement and can be reliably extracted in those case in which crosstalk is limited."…”

Section: Minimal Crosstalk Area (Mca)mentioning

confidence: 99%

Electrode Placement in Surface Electromyography (sEMG) ”Minimal Crosstalk Area“ (MCA)

Blanc¹,

Dimanico²

2010

TOREHJ

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This paper is an introduction to a workshop on electrodes location and specific exercises. Selectivity of EMG electrodes depends on their interspacing, their conductive area and axis direction with respect to the direction of the underlying muscular fibres. Minimal cross talk area (MCA) helps to limit or avoid crosstalk from neighbouring muscles. We present examples of MCA and typical sEMG patterns during specific exercises.

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Effect of electrode location on EMG signal envelope in leg muscles during gait

Cited by 107 publications

References 19 publications

Standardized Electromyographic Indexes Allow a Reliable Measurement of Masticatory Muscles Function

Standardized Electromyographic Indexes Allow a Reliable Measurement of Masticatory Muscles Function

Surface Electromyography: Its Role and Potential in the Development of Exoskeleton (Review)

Electrode Placement in Surface Electromyography (sEMG) ”Minimal Crosstalk Area“ (MCA)

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