MUSCLE TWITCH

is a sudden involuntary movement of a muscle of extreme contraction then relaxation.

MUSCLE TWITCH: "A muscle twitch can occur due to a variety of factors from the presence of an agitator to purposeful movement."
Cite this page: N., Pam M.S., "MUSCLE TWITCH," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/muscle-twitch/ (accessed September 18, 2020).
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