title: Location of needle electrode recording sites in the human masseter muscle by magnetic resonance imaging.
abstract: A stereotactic method was developed for locating needle electrode recording sites within the human masseter muscle. The method combines a single motor unit (SMU) electromyographic (EMG) technique, magnetic resonance imaging, the 3-dimensional reconstruction of orofacial tissues, and a common reference systems. SMU EMG activity can be recorded from different sites in the masseter muscle, and the location of these sites displayed graphically in 3 dimensions. The technique should be a useful adjunct in future studies of the internal architecture and electrophysiological properties of the human masseter muscle.
authors.affiliation: Department of Oral Biology, Faculty of Dentistry, University of British Columbia, Vancouver, Canada.
authors.forename: A S
authors.initials: AS
authors.lastname: McMillan
authors.forename: A G
authors.initials: AG
authors.lastname: Hannam
mesh_terms: D000328:Adult; D004576:Electromyography / Q000379:methods*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008406:Masseter Muscle / Q000033:anatomy & histology / Q000502:physiology*; D008410:Masticatory Muscles / Q000502:physiology*; D013238:Stereotaxic Techniques