Titre du document / Document title

Electromyographic analysis of superior belly of the omohyoid muscle and anterior belly of the digastric muscle in mandibular movements

Auteur(s) / Author(s)

CASTRO H. A. L. ⁽¹⁾ ; RESENDE L. A. L. ⁽²⁾ ; BERZIN F. ⁽¹⁾ ; KÖNIG B. ⁽³⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Department of Morphology, FOP, UNICAMP, São Paulo, BRESIL
⁽²⁾ Department of Neurology, FMB, UNESP, São Paulo, BRESIL
⁽³⁾ Department of Anatomy, ICB, USP, São Paulo, BRESIL

Résumé / Abstract

The superior belly of the omohyoid muscle and the anterior belly of the digastric muscle, were studied electromyographically in 20 young volunteers. For each muscle, 1 pair of monopolar electrodes was employed. One was a surface electrode and the other a needle electrode, which was inserted in the belly of the muscle. The surface electrode was placed 1 cm apart from the needle electrode. The most marked action of both muscles was on the movement of lowering the mandible. They also act in those movements for the performance of which they have associated a component of lowering the jaw, propulsion, laterality to the right and the left and retrusion. They are not active in the resting position and during jaw movements of elevation, extrusion and protrusion. Both muscles are active most of the time, simultaneously, but it is not possible to demonstrate that there is a synchronism between their actions.

Revue / Journal Title

Electromyography and clinical neurophysiology   ISSN 0301-150X   CODEN EMCNA9 

Source / Source

1998, vol. 38, n^o7, pp. 443-447 (36 ref.)

Langue / Language

Anglais

Editeur / Publisher

Nauwelaerts, Beauvechain, BELGIQUE  (1972) (Revue)

Mots-clés anglais / English Keywords

Body movement ; Jaw ; Chewing ; Digastric muscle ; Sternohyoid muscle ; Electromyography ; Human ; Striated muscle ; Electrophysiology ;

Mots-clés français / French Keywords

Mouvement corporel ; Mâchoire ; Mastication ; Muscle digastrique ; Muscle sternohyoïdien ; Electromyographie ; Homme ; Muscle strié ; Electrophysiologie ;

Mots-clés espagnols / Spanish Keywords

Movimiento corporal ; Maxilar ; Masticación ; Músculo digástrico ; Músculo esternohioideo ; Electromiografía ; Hombre ; Músculo estriado ; Electrofisiología ;

Localisation / Location

INIST-CNRS, Cote INIST : 11548, 35400007133136.0090