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Twitch may refer to: ==Physiology== * Muscle contraction * * Convulsion, rapid and repeated muscle contraction and relaxation * * Fasciculation, a small, local, involuntary muscle contraction * * Myoclonic twitch, a jerk usually caused by sudden muscle contractions * * Myokymia, a continuous, involuntary muscle twitch that affects the muscles of the face * * Spasm, a sudden, involuntary contraction * * Tic, an involuntary, repetitive, nonrhythmic action * * Tremor, an involuntary, repetitive, somewhat rhythmic action 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Twitch」の詳細全文を読む スポンサード リンク
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