is one of the many applications of electromyography, where the various levels of endogenous electrical activity of any muscle groups which make up the facial structure can be measured accurately using electrodes.

FACIAL ELECTROMYOGRAPHY: "Physicians are able to measure the electrical activity of any and all muscle groups on the face through using facial electromyography."
Cite this page: N., Pam M.S., "FACIAL ELECTROMYOGRAPHY," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/facial-electromyography/ (accessed September 24, 2021).