Free Run EMG
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|Free Run or Kinesiology EMG: Sphincter electromyo-graphy (EMG) is the recording of electrical potentials generated by depolarization of the striated muscles involved in the active continence mechanism. The method yields information on the voluntary control of the sphincter muscles and the coordination between the detrusor and the sphincter apparatus during bladder filling and during micturition.
Sphincter EMG may be used for recording of the activity in the urethral striated sphincter, the anal sphincter or the pelvic floor muscles - or all sphincters simultaneously. Routine EMG as part of urodynamic studies usually employs 1 or 2 channels for recording from the urethral and/or anal sphincter muscle.