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H-reflex. The H-reflex (or Hoffmann's reflex) is a reflectory reaction of muscles after electrical stimulation of sensory fibers ( Ia afferents stemming from muscle spindles) in their innervating nerves (for example, those located behind the knee ). The H-reflex test is performed using an electric stimulator, which gives usually a square-wave ...
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.
D004576. [ edit on Wikidata] 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. An electromyograph detects the electric potential generated by muscle cells [3 ...
An evoked potential or evoked response is an electrical potential in a specific pattern recorded from a specific part of the nervous system, especially the brain, of a human or other animals following presentation of a stimulus such as a light flash or a pure tone. Different types of potentials result from stimuli of different modalities and ...
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However, other inflammatory conditions, such as lupus, can have a positive anti-NT5C1A. As of 2019, it remains to be established whether a positive anti-NT5C1A antibody test can make muscle biopsy unneeded. Inclusion body myositis MRI. Muscle imaging can help establish the pattern of muscle involvement and selection of a biopsy site.
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Electroencephalography (EEG) is a method to record an electrogram of the spontaneous electrical activity of the brain.The biosignals detected by EEG have been shown to represent the postsynaptic potentials of pyramidal neurons in the neocortex and allocortex.