Experimental device for detecting laryngeal movement during swallowing

Area of Science:

• Biomechanics
• Physiology
• Medical Devices

Background:

• Swallowing is a complex rhythmic process involving sequential muscle activation and laryngeal elevation.
• The oro-pharyngeal stage of swallowing initiates with the mylohyoid muscle, progressing through oral and pharyngeal muscles to the esophageal sphincter.
• Detecting the onset of swallowing movements non-invasively from the body surface is crucial for research.

Purpose of the Study:

• To develop a device capable of detecting the onset of swallowing movements from the body surface.
• To investigate the relationship between the onset of laryngeal movement and the electromyography (EMG) initiation of the anterior digastric muscle.

Main Methods:

• A novel device was designed to record laryngeal movement and position from the body surface.
• The study aimed to correlate device recordings with EMG data from the anterior digastric muscle.

Main Results:

• The developed device successfully recorded reproducible laryngeal movement and position.
• Preliminary findings suggest a correlation between laryngeal movement onset and anterior digastric muscle EMG initiation.

Conclusions:

• The new device offers a valuable tool for studying the biomechanics of swallowing.
• Further research is needed to refine experimental conditions and fully validate the device's capabilities in swallowing analysis.