Origin:  Brainstem facial nucleus, facial nerve

Recording Site:  Orbicularis Oculi

Reference Site:  Outer canthus

Ground:  Forehead

Stimulation Site:  Front of Lower ear.

Procedure:  The recording electrode is placed over the orbicularis oculi muscles, midpoint, just below the lower lid.  The reference electrode is placed on the outer canthus, lateral to the eye.  Stimulation is in the anterior tragus, directly in front of the lower ear.