نتایج جستجو برای: emg

تعداد نتایج: 10005  

2006
Xiao Hu Xiaomei Ren

This paper introduces a novel and simple algorithm to extract the feature from Surface EMG signals recorded from the skin surface over forearm muscles. Surface EMG signal is decomposed into 16 frequency bands (FB) by wavelet packet transform (WPT), and then wavelet packet entropy (WPE) of every surface EMG signal is calculated by its relative wavelet energy in every FB. WPE is regarded as the f...

ژورنال: سلامت کار ایران 2012
بختیاری, امیر هوشنگ , سوان, اوین, صادقی نایینی, حسن, کلینی ممقانی, ناصر,

  Background and aims : In our daily lives hand tools are often used in many work situations. With respect to design characteristics, hand tools can be considered a risk factor when a high level of repetition are required or when awkward postures are adopted. Therefore attention to ergonomics design rules for hand tools is the most important factor in design process. With this in mind, the aim ...

2012
R. A. R. C. Gopura Kazuo Kiguchi

The electromyographic signals abbreviated as EMG, represent the amount of electrical potential generated by the muscle cells when they contract or when they are at rest. Basically, EMG signals can be classified into two types according to the place where they are extracted. The EMG signals detect from inside of the muscles are called as intramuscular EMG whereas EMG signals detect from skin sur...

Journal: :Physical Therapy 1998

Journal: :Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 1998

2010
Philip Chrapka

Since the 1970s, electromyographic control of a prosthetic device has been attempted in a number of different ways. It was only until recently, that the classification of electromyographic signals was possible through the use of neural networks. With the advent of more advanced techniques like support vector machines this type of control is becoming more realistic. This would initiate a great s...

Journal: :Physiology & Behavior 2016
Tomohiro Ishii Noriyuki Narita Hiroshi Endo

This study aims to quantitatively clarify the physiological features in rhythmically coordinated jaw and neck muscle EMG activities while chewing gum using EMG-EMG transfer function and EMG-EMG coherence function analyses in 20 healthy subjects. The chewing side masseter muscle EMG signal was used as the reference signal, while the other jaw (non-chewing side masseter muscle, bilateral anterior...

سیگنال‌های الکترومایوگرام (EMG) که از عضلات تنه، مانند عضله راست شکمی و عضله مایل خارجی، برداشت می‌شوند؛ غالباً تحت تأثیر فعالیت الکتریکی عضله قلب (ECG) قرار می‌گیرند. در این مقاله روشی جدید برای حذف تداخل ECG از EMG بر اساس تجزیه سیگنال به حالت تجربی معرفی شده است. روش پیشنهادی با روش فیلتر بالاگذرباترورث مقایسه شد و نتایج حاصل از تحلیل سیگنال‌های تداخل یافته...

2017
Akira Furui Hideaki Hayashi Go Nakamura Takaaki Chin Toshio Tsuji

This paper proposes an artificial electromyogram (EMG) signal generation model based on signal-dependent noise, which has been ignored in existing methods, by introducing the stochastic construction of the EMG signals. In the proposed model, an EMG signal variance value is first generated from a probability distribution with a shape determined by a commanded muscle force and signal-dependent no...

Journal: :Integrative and comparative biology 2008
Thomas J Roberts Annette M Gabaldón

Electromyography is often used to infer the pattern of production of force by skeletal muscles. The interpretation of muscle function from the electromyogram (EMG) is challenged by the fact that factors such as type of muscle fiber, muscle length, and muscle velocity can all influence the relationship between electrical and mechanical activity of a muscle. Simultaneous measurements of EMG, musc...

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