View source for Muscle artifact

*Most common artifact
*Frequency 20 to 100 Hz
*High amplitude
*Most common muscles: frontalis and temporalis muscles (eg, tightening of the jaw muscles) 
*Muscle artifacts represent motor unit potentials as typically observed on needle electrode examination during electromyogram
*A high frequency filter can reduce this artifact


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''''' Muscle artifacts frontotemporal during chewing (source)'''''
[[File: Muscle artifacts during chewing.png |border|1200px|left]]
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