Related Experiment Video
Updated: Jan 3, 2026
07:22
Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing
Published on: December 1, 2023
897
Comparison Between Automatic and Volitional Swallow in Healthy Individuals Using Tongue Array and Cervical
Krishnamurthy Rahul1, Narayanan Swapna2, Ramachandran Resmitha2
11Department of Audiology and Speech Language Pathology, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka India.
Summary
Volitional swallowing (VS) shows higher amplitude and pressure than automatic swallowing (AS). However, only the duration of vocal fold closure during AS was significantly different, suggesting its key role in airway protection.
Area of Science:
- Physiology
- Biomechanics of Swallowing
Background:
- Swallowing can be volitional or automatic.
- Previous research has explored potential differences between automatic swallow (AS) and volitional swallow (VS).
Purpose of the Study:
- To physiologically differentiate AS from VS.
- To analyze swallowing parameters using advanced technology.
Main Methods:
- 15 males and 15 females (18-25 years) participated.
- Participants performed both AS and VS tasks.
- Tongue array and cervical auscultation via Digital Swallowing Workstation were used to analyze maximum amplitude, duration, and pressure.
Main Results:
- Volitional swallowing (VS) demonstrated higher amplitude and pressure values compared to automatic swallowing (AS).
- A statistically significant difference was observed only in the duration parameter of cervical auscultation.
- This suggests vocal fold closure duration is crucial for airway protection.
Conclusions:
- The duration of vocal fold closure is a critical factor in airway protection during swallowing.
- Physiological differences exist between AS and VS, particularly concerning airway protection mechanisms.
- Further discussion on gender effects and the organization of AS and VS is provided.
Related Concept Videos
01:25Deglutition
5.0K
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.
Swallowing can be divided into three stages: the voluntary phase, the pharyngeal phase, and the esophageal phase. Although the...
Swallowing can be divided into three stages: the voluntary phase, the pharyngeal phase, and the esophageal phase. Although the...
5.0K
01:24Upper GI Series: Barium Swallow
1.4K
The Barium Swallow Study, or a Barium Esophagogram, is a diagnostic imaging method used to visualize the upper gastrointestinal (GI) tract, including the esophagus, stomach, and small intestine. It employs barium sulfate, a radiopaque contrast material, to provide clear images of the upper digestive system, helping to identify abnormalities, diseases, or structural issues.
Purpose and Procedure
Patients undergoing this procedure ingest a liquid containing barium sulfate with a chalky...
Purpose and Procedure
Patients undergoing this procedure ingest a liquid containing barium sulfate with a chalky...
1.4K
01:26Assessment of the Mouth
927
A thorough mouth assessment, including inspection and palpation of the lips, gums, tongue, tonsils, uvula, and pharynx, is crucial in detecting potential health issues. Diseases ranging from oral cancer to systemic conditions like diabetes could be identified early through careful oral examination. This article provides a detailed guide on conducting a comprehensive mouth assessment.
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
927
01:25Suctioning the Oropharyngeal Airway
706
In preparing for oropharyngeal airway suctioning, a nurse must gather all necessary equipment, including a suction unit with tubing, a prepackaged suction kit, sterile gloves, water or saline for irrigation, a water-soluble lubricant, and additional personal protective equipment (such as a gown, mask, and goggles) to control infections.
After assembling the equipment, the nurse should practice hand hygiene and don appropriate PPE according to infection control guidelines to avoid the...
After assembling the equipment, the nurse should practice hand hygiene and don appropriate PPE according to infection control guidelines to avoid the...
706
01:01Tongue
2.5K
The human tongue is a fascinating and complex organ, responsible for various essential functions such as swallowing, speech, and taste. It is also subject to various conditions and diseases. In this article, we delve into the anatomy of the tongue, its roles, and some common conditions that can affect it.
Anatomical Position in the Oral Cavity
The tongue is located within the oral cavity, also known as the mouth. It is attached to the floor of the mouth by a fold of mucous membrane called the...
Anatomical Position in the Oral Cavity
The tongue is located within the oral cavity, also known as the mouth. It is attached to the floor of the mouth by a fold of mucous membrane called the...
2.5K
01:21Larynx
3.9K
The human larynx, often referred to as the voice box, is an intricate organ located in the neck. It serves as a pathway for air to enter the lungs during respiration and is an essential component of voice production.
Anatomy of the Larynx
The larynx consists of various components, including cartilage, muscles, and vocal cords. Its structure includes three large unpaired cartilages—the thyroid, cricoid, and epiglottis—and three smaller paired cartilages—the arytenoids,...
Anatomy of the Larynx
The larynx consists of various components, including cartilage, muscles, and vocal cords. Its structure includes three large unpaired cartilages—the thyroid, cricoid, and epiglottis—and three smaller paired cartilages—the arytenoids,...
3.9K