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Electromyography (EMG) is a technique for evaluating and recording the electrical activity produced by skeletal muscles. [ 1 ] [ 2 ] EMG is performed using an instrument called an electromyograph to produce a record called an electromyogram .
Intraoperative neurophysiological monitoring (IONM) or intraoperative neuromonitoring is the use of electrophysiological methods such as electroencephalography (EEG), electromyography (EMG), and evoked potentials to monitor the functional integrity of certain neural structures (e.g., nerves, spinal cord and parts of the brain) during surgery.
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Second, medical roots generally go together according to language, i.e., Greek prefixes occur with Greek suffixes and Latin prefixes with Latin suffixes. Although international scientific vocabulary is not stringent about segregating combining forms of different languages, it is advisable when coining new words not to mix different lingual roots.
A "saw tooth" pattern with QRS complexes is the hallmark of atrial flutter. A sine wave pattern is the hallmark of ventricular flutter. Absent P waves with wide QRS complexes and a fast heart rate are ventricular tachycardia. Determination of rate and rhythm is necessary in order to make sense of further interpretation.
Facial Electromyography (or fEMG) is a precise and sensitive method to measure emotional expression. Unlike self-reports, fEMG does not depend upon language and does not require cognitive effort or memory. fEMG is capable of registering the response even when subjects were instructed to inhibit their emotional expression.
For example, a doctor may insert a catheter containing an electrode into the heart to record the heart muscle's electrical activity. Another example of clinical electrophysiology is clinical neurophysiology. In this medical specialty, doctors measure the electrical properties of the brain, spinal cord, and nerves.
Strobe lighting at known frequency has been used in the past to aid in the analysis of gait on single photographic images. [10] [11] Cine film or video recordings using footage from single or multiple cameras can be used to measure joint angles and velocities. This method has been aided by the development of analysis software that greatly ...