title: Relationship between the tonic elevator mandibular activity and the vertical dimension during the states of vigilance and hypnosis.
abstract: The variation of the tonic EMG elevator mandibular activity was studied as well as the consequent variation of the vertical dimension in two different experimental states: those of vigilance and hypnosis. In the state of vigilance, normal values of tonic EMG activity were recorded and a space of inocclusion (X = 2.22 mm) coincident with the postural mandibular position. Under hypnosis a significant reduction of the tonic EMG activity was observed (43 to 50%), together with a great increase of the inocclusion space (X = 8.90 mm).
authors.affiliation: Universidad de Chile.
authors.forename: A
authors.initials: A
authors.lastname: Manns
authors.forename: R V
authors.initials: RV
authors.lastname: Zuazola
authors.forename: R M
authors.initials: RM
authors.lastname: Sirhan
authors.forename: M
authors.initials: M
authors.lastname: Quiroz
authors.forename: M
authors.initials: M
authors.lastname: Rocabado
mesh_terms: D000293:Adolescent; D000328:Adult; D003766:Dental Occlusion; D004576:Electromyography; D005260:Female; D006801:Humans; D006990:Hypnosis; D008297:Male; D008334:Mandible / Q000502:physiology; D008410:Masticatory Muscles / Q000502:physiology*; D009119:Muscle Contraction; D009126:Muscle Relaxation; D009129:Muscle Tonus; D014716:Vertical Dimension