title: Experimental device for detecting laryngeal movement during swallowing.
abstract: It has been reported that swallowing is a rhythmic movement, in which the onset of the oro-pharyngeal stage of swallowing starts from the mylohyoid muscle, followed by movement of the oral and pharyngeal muscles, and reaching the superior esophageal sphincter muscle. This is defined as the oro-pharyngeal stage of swallowing. It has also been reported that along with this movement, the larynx elevates in an antero-superior direction. To investigate the swallowing movement, it would be useful to be able to detect the start of swallowing movements from the body surface. Such a device was designed in this study to investigate the relationships between the onset of laryngeal movement and the EMG initiation of the anterior digastric muscle. Although experimental conditions must be further examined, we were able to record the reproducible movement and the position of larynx using our device provides another tool for studying the swallowing movement.
authors.affiliation: Oral Health Science Center, Department of Anatomy, Tokyo Dental College, 1-2-2 Masago, Mihama-ku, Chiba 261-8502, Japan.
authors.forename: Shinichi
authors.initials: S
authors.lastname: Abe
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Kaneko
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Nakamura
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Watanabe
authors.forename: Masuro
authors.initials: M
authors.lastname: Shintani
authors.forename: Masatsugu
authors.initials: M
authors.lastname: Hashimoto
authors.forename: Genyuki
authors.initials: G
authors.lastname: Yamane
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Ide
authors.forename: Masaki
authors.initials: M
authors.lastname: Shimono
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Ishikawa
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Yamada
authors.forename: Toyohiko
authors.initials: T
authors.lastname: Hayashi
mesh_terms: D003679:Deglutition / Q000502:physiology*; D017097:Electric Impedance; D004576:Electromyography / Q000295:instrumentation; D006801:Humans; D007734:Kymography / Q000295:instrumentation*; D007821:Laryngeal Muscles / Q000502:physiology*; D007830:Larynx / Q000502:physiology*; D008297:Male; D009068:Movement; D009334:Neck Muscles / Q000502:physiology; D010609:Pharyngeal Muscles / Q000502:physiology; D014160:Transducers, Pressure