نتایج جستجو برای: surface electromyography semg

تعداد نتایج: 643631  

Journal: :Gerontology 2015
Gennaro Boccia Davide Dardanello Valeri Rosso Luisa Pizzigalli Alberto Rainoldi

The aim of this mini-review is to describe the potential application of surface electromyography (sEMG) techniques in aging studies. Aging is characterized by multiple changes of the musculoskeletal system physiology and function. This paper will examine some of the innovative methods used to monitor age-related alterations of the neuromuscular system from sEMG signals. A description of critica...

2008
M. S. HUSSAIN

An algorithm is proposed for processing and analyzing surface electromyography (SEMG) signals using wavelet transform and Higher Order Statistics (HOS). EMG signal acquires noise while travelling though different media. Wavelet denoising is performed in this research for initial EMG signal processing. With the appropriate choice of the Wavelet Function (WF), it is possible to remove interferenc...

Journal: :COMSIG review 1995
Raymond Hayek Simon Austin Henry Pollard

It is a common belief held by chiropractors (2) that spinal manipulation affects those muscles spanning a hypomobile spinal joint (facet or apophyseal joints). There have been attempts to record changes in paraspinal muscle activity following manipulative therapy by means of surface electromyography (SEMG) (3)(4)(5). However, the physiological anatomical nature of the paraspinal muscles enables...

2011
Qinghua Wang Yina Guo Ajith Abraham

Normal hand gesture recognition methods using surface Electromyography (sEMG) signals require designers to use digital signal processing hardware or ensemble methods as tools to solve real time hand gesture classification. These ways are easy to result in complicated computation models, inconvenience of circuit connection and lower online recognition rate. Therefore it is imperative to have goo...

Journal: :Journal of applied physiology 2015
Roger M Enoka Jacques Duchateau

TO THE EDITOR: Enoka and Duchateau (2) correctly call for caution when interpreting voluntary surface electromyography (sEMG) in terms of neural drive. If voluntary sEMG signals recorded during nonfatiguing isometric contractions depend on the number of motor units recruited, their firing rate, and their size (5), modeling found no direct association between neural drive and voluntary sEMG ampl...

Journal: :The journal of pain : official journal of the American Pain Society 2005
Michael E Geisser Mohammed Ranavaya Andrew J Haig Randy S Roth Robert Zucker Clara Ambroz Marianne Caruso

UNLABELLED Significant differences in surface electromyography (SEMG) have been reported between persons with low back pain (LBP) and normal, healthy controls. This manuscript presents a systematic meta-analytic review of studies examining SEMG differences between these groups. Forty-four articles were identified using MEDLINE and a review of reference lists in articles. For static SEMG, the la...

2017
Minjae Kim Gangyong Gu Kyoung Je Cha Dong Sung Kim Wan Kyun Chung

Surface electromyography (sEMG) signals reflect muscle contraction and hence, can provide information regarding a user's movement intention. High-density sEMG systems have been proposed to measure muscle activity in small areas and to estimate complex motion using spatial patterns. However, conventional systems based on wet electrodes have several limitations. For example, the electrolyte enclo...

2013
João Luiz A. S. Ramos Marco A. Meggiolaro

1 INTRODUCTION This paper presents an alternative and simple exoskeleton Human-Machine Interface (HMI) for human strength and endurance amplification using a modified version of the Hill-type muscle. Pneumatic Artificial Muscles (PAM) are used as actuators for its high power-to-weight ratio. Genetic Algorithms (GA) approach locally optimizes the control model parameters for the assistive device...

Journal: :Journal of neurophysiology 2015
Harri Piitulainen Alberto Botter Mathieu Bourguignon Veikko Jousmäki Riitta Hari

Cortex-muscle coherence (CMC) reflects coupling between magnetoencephalography (MEG) and surface electromyography (sEMG), being strongest during isometric contraction but absent, for unknown reasons, in some individuals. We used a novel nonmagnetic high-density sEMG (HD-sEMG) electrode grid (36 mm × 12 mm; 60 electrodes separated by 3 mm) to study effects of sEMG recording site, electrode deriv...

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