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Related Experiment Video

Updated: Jul 6, 2026

Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing
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Surface electromyography pattern of human swallowing.

Annalisa Monaco1, Ruggero Cattaneo, Alessandro Spadaro

  • 1Department of Gnathology and Prostethic Dentistry,_School of Dentistry, University of L'Aquila-Italy. annalisamonaco@yahoo.it

BMC Oral Health
|March 28, 2008
PubMed
Summary
This summary is machine-generated.

Healthy individuals exhibit varied muscle activity and mandibular movement during spontaneous saliva swallowing, with no single "normal" pattern identified. This study highlights differences in stomatognathic muscle activation between those with and without occlusal contact.

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Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models
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Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models

Published on: March 1, 2015

Area of Science:

  • Physiology
  • Biomechanics
  • Dental Science

Background:

  • Swallowing involves complex muscle coordination in the stomatognathic, pharyngeal, and laryngeal systems.
  • Electromyography and kinetics studies often focus on pharyngeal/laryngeal patterns, with less attention to stomatognathic muscles during spontaneous saliva swallowing.
  • Dental research suggests muscle activity during swallowing may contribute to malocclusion.

Purpose of the Study:

  • To investigate the activity patterns of mandibular elevator (masseter, anterior temporalis), submental, and neck (sternocleidomastoid) muscles during spontaneous saliva swallowing in healthy individuals.
  • To correlate these muscle activities with mandibular movement.
  • To identify potential differences in muscle activation based on occlusal contact during swallowing.

Main Methods:

  • Surface electromyography (SEMG) was used to record muscle activity.
  • Computerized kinesiography analyzed mandibular movement.
  • 111 healthy individuals participated in the study, analyzing their spontaneous saliva swallowing.

Main Results:

  • Fifty-seven individuals swallowed without occlusal contact (SNOC), while 54 had occlusal contact (SOC).
  • Significant differences in the electromyography of the anterior temporalis and masseter muscles were observed between SNOC and SOC groups (p < 0.0001).
  • Swallowing duration was significantly longer in SNOC subjects; sternocleidomastoid and submental muscle activity showed no significant group differences. Gender and age did not influence activation patterns.

Conclusions:

  • There is no single "normal" or "typical" pattern for spontaneous saliva swallowing in healthy individuals.
  • Healthy individuals exhibit distinct physiological behaviors depending on whether occlusal contact is present or absent during swallowing.
  • Polygraphy is a valuable, non-invasive tool for studying swallowing physiology.