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Journal of the Korean Academy of Rehabilitation Medicine 1993;17(3):306-311.
Optimal elecrode placement in facial nerve conduction study.
Han, Tai Ryoon , Chung, Sun Gun , Kwon, Yong Wook
Department of Rehabilitation Medicine, Seoul National University College of Medicine
안면신경 전도검사에서 기록전극 위치에 대한 연구
한태륜, 정선근, 권용욱
서울대학교 의과대학 재활의학교실
Abstract

This study was designed to decide the most optimal sites of the active electrode in nerve conduction study of each branch of facial nerve. Twenty healthy male and female volunteers in 3rd and 4th decade were investigated. Our criteria for optimal sites of the active electrode were: i) intial negative take-off of the response, ii) maximal amplitude of the response, and iii) the most synchronized response,

The obtained optimal sites are as follows:

1) Frontalis (temporal branch): a point midway between the hair-line and the eyebrow along a line passing vertically through the pupil gazing the front.

2) Orbicularis oculi (zygomatic branch): a medial quarter between medial and lateral canthus.

3) Nasalis (buccal branch): muscle belly.

4) Triangularis (mandibular branch): 15 mm lateral to, and 30 mm below the corner of the mouth.

5) Orbicularis oris (zygomatic, mandibular, buccal branch): 2 mm below the lower lip midway between the midline and the corner of the mouth

Key Words: Facial nerve, Nerve conduction study, Electrodiagnosis, Active electrode sites


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