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EMG (Electromyogram)


The human body is an electrochemical organism, although the electrical activities of the body are relatively weak. Nevertheless, a variety of different human electrical activities can be measured through electrodes taped to the skin or scalp. In scientific sleep and dream research, the most important measurements are EEGs (electroencephalograms), which are measurements of brain wave activity, and EOGs (electrooculograms), which measure eye movements distinguishing between rapid eye movement (REM) and non-REM sleep. A third measurement usually taken along with an EEG and EOG is an EMG (electromyogram), a measure of muscle tone in the neck that is typically made through electrodes attached to the chin. The EMG helps researchers identify periods of head movement that may interfere with EEG and EOG readings, and is also a secondary indicator of REM periods (because muscular activity is at a standstill during REM sleep).

References in periodicals archive ?
The results from the present study showed that the EMG intensity patterns from the biceps brachii were affected by both the concentric and eccentric exercise protocols.
JERUSALEM: East Mediterranean Gas (EMG) has filed a request for international arbitration in the wake of a series of gas disruptions from Egypt, an EMG stakeholder said on Sunday.
50, in reality it is more than double C* I can see why Egyptians are upset with the price EMG is paying.
The acquired EMG signal was divided into data blocks of 250ms, for each block the root mean square of the signal being computed as in (1).
For small muscles, the relationship between force and the EMG signal tend to be linear, whereas in bigger muscles that need a better motor recruitment, the same relationship tends to not be linear, because the amplitude variations of the muscle electric signal do not correspond to the force variations.
Working with lenders, EMG has eliminated some costly "frills" that are typically done on due diligence for larger loans.
The addition of NVT Technologies to the EMG family creates the opportunity to expand services to existing NVT and EMG clients," said Claude Limoges, CEO of EMG.
Calisma Acibadem Universitesi Tip Fakultesi, Bakirkoy, Maslak, Fulya Hastaneleri EMG Laboratuvarlarinda Subat 2011 ve Haziran 2011 tarihleri arasinda yapildi.
Since the terror attack on GASCO's pipeline on July 12, 2011, gas supply from EGAS to EMG, and therefore, to EMG's Israeli customers, has not resumed," the company said.
Surface EMG signals were recorded from the vastus lateralis muscle of the dominant thigh with an 8-channel linear electrode array and surface EMG16 data acquisition system (EMG16, LISiN-Prima Biomedical & Sport, Treviso, Italy).
Compared with all bioelectrical signals, EMG is the most suitable signal for engineering applications because it is generated under human consciousness.
16] Wagner-Grossman's theory was refuted in 1995 by Koufman, who demonstrated the absence of correlation between glottic configuration and EMG activity of the CT.