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Swallowing, otherwise known as deglutition, facilitates the transport of food from the mouth to the stomach. It is a multifaceted process that involves both the tongue and the muscles of the throat and esophagus. Saliva and mucus aid in this process, which takes approximately 4 to 8 seconds for semi-solid or solid food and around 1 second for liquids or very soft food.
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Related Experiment Video

Updated: Jul 2, 2026

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

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

Published on: March 1, 2015

Age-related changes in cortical swallowing processing.

Inga K Teismann¹, Olaf Steinstraeter, Wolfram Schwindt

¹Institute for Biomagnetism and Biosignalanalysis, University of Muenster, Muenster, Germany. i.teismann@uni-muenster.de

Neurobiology of Aging

|August 22, 2008

Summary

This summary is machine-generated.

Aging increases brain activity during swallowing, suggesting adaptive changes in the elderly. This study highlights the importance of age-matched controls in neuroimaging research on swallowing.

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Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing

Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing

Published on: May 6, 2014

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Last Updated: Jul 2, 2026

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

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

Published on: March 1, 2015

Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing

Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing

Published on: May 6, 2014

Area of Science:

Neuroscience
Gerontology
Physiology

Background:

Swallowing (deglutition) is a complex sensorimotor process affected by aging.
Previous research focused on young, healthy individuals, limiting understanding of age-related changes.
Age-related swallowing impairments affect both oral and pharyngeal phases.

Purpose of the Study:

To investigate potential cortical compensation for age-related swallowing impairments.
To compare brain activity during swallowing in elderly versus young healthy adults.
To identify adaptive cerebral changes associated with aging and deglutition.

Main Methods:

Whole-head magnetoencephalography (MEG) was used.
9 healthy elderly subjects (mean age 71.6) and 9 healthy young subjects (mean age 23.8) participated.
Data analyzed using time-frequency plots and synthetic aperture magnetometry (SAM), with group analysis via permutation testing.

Main Results:

Elderly subjects showed increased somatosensory cortical activation during swallowing compared to young subjects.
This heightened activation was observed in both cerebral hemispheres.
Results indicate adaptive cerebral plasticity in response to aging.

Conclusions:

The aging brain exhibits compensatory mechanisms for swallowing.
Increased cortical activation suggests an adaptive response to age-related changes in deglutition.
Emphasizes the necessity of age-matched control groups in neuroimaging studies of sensorimotor functions.