Experimental device for detecting laryngeal movement during swallowing.
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.
Abe
Shinichi
S
Oral Health Science Center, Department of Anatomy, Tokyo Dental College, 1-2-2 Masago, Mihama-ku, Chiba 261-8502, Japan.
Kaneko
Hirofumi
H
Nakamura
Yasuo
Y
Watanabe
Yutaka
Y
Shintani
Masuro
M
Hashimoto
Masatsugu
M
Yamane
Genyuki
G
Ide
Yoshinobu
Y
Shimono
Masaki
M
Ishikawa
Tatsuya
T
Yamada
Yoshiaki
Y
Hayashi
Toyohiko
T
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