Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Deglutition01:25

Deglutition

2.5K
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...
2.5K
Upper GI Series: Barium Swallow01:24

Upper GI Series: Barium Swallow

909
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...
909
Autonomic Nervous System01:22

Autonomic Nervous System

9.6K
The autonomic nervous system (ANS) is a critical component of the peripheral nervous system, primarily responsible for regulating involuntary bodily functions and maintaining homeostasis. It functions in tandem with the central nervous system (CNS) to seamlessly coordinate various physiological processes without the need for conscious control.
The ANS comprises two main divisions: the sympathetic and parasympathetic divisions. These divisions function antagonistically to maintain a dynamic...
9.6K
Physiology of the Gastrointestinal System I: Ingestion and Propulsion01:22

Physiology of the Gastrointestinal System I: Ingestion and Propulsion

877
The physiology of the gastrointestinal system begins with ingestion as food enters the mouth.
877
Gastric Emptying01:16

Gastric Emptying

1.4K
Gastric emptying occurs when the stomach gradually releases chyme into the duodenum. When the stomach is distended, it triggers the release of gastrin, a hormone that promotes gastric acid secretion to aid in digestion. Additionally, stomach distension contributes to peristaltic waves that propel gastric contents toward the pyloric region. The gastroenteric reflex, on the other hand, primarily stimulates peristalsis in the intestines, facilitating the movement of contents further along the...
1.4K
Factors Affecting Drug Response: Overview01:21

Factors Affecting Drug Response: Overview

2.4K
When it comes to infants and young children, they are typically administered smaller doses of medication in comparison to adults. This is primarily because their organ functions still need to fully develop, meaning their bodies are not as efficient at metabolizing or eliminating drugs. Additionally, their blood-brain barrier is more permeable than in adults. As a result, high concentrations of drugs can easily penetrate the central nervous system (CNS), potentially leading to neurological...
2.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Relation between Time from Onset to Randomization and Benefit Magnitude in Recent Clinical Trials of Thrombectomy for Patients with Large Ischemic Cores.

Annals of Indian Academy of Neurology·2026
Same author

Cost-utility framework to evaluate therapeutic interventions targeting reduction in cerebral infarction among aneurysmal subarachnoid hemorrhage patients.

Neurosurgical review·2026
Same author

Chronological Sequence of Convulsive Status Epilepticus Treatment Steps in a Real-Life Scenario for Patients Enrolled in a Large Multicenter Trial.

Academic emergency medicine : official journal of the Society for Academic Emergency Medicine·2026
Same author

Unblinded by the Night: Predictive Power for Complex Bayesian Adaptive Trials When Sight Privileges Vary.

Pharmaceutical statistics·2026
Same author

Biostatistical benchmarking of neuro-oncology trials.

Neuro-oncology advances·2026
Same author

Recombinant factor VIIa versus placebo for spontaneous intracerebral haemorrhage within 2 h of symptom onset (FASTEST): a multicentre, double-blind, randomised, placebo-controlled, phase 3 trial.

Lancet (London, England)·2026

Related Experiment Video

Updated: Sep 13, 2025

Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models
08:32

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

Published on: March 1, 2015

21.5K

Swallow Reaction Time in Healthy Adults.

Kevin Renz Ambrocio1, Jonathan Beall2, Kendrea L Focht Garand1

  • 1Department of Communication Science and Disorders, University of Pittsburgh, PA.

Perspectives of the ASHA Special Interest Groups
|July 31, 2025
PubMed
Summary

Swallow reaction time (SRT) shows significant variability in healthy adults. Thicker liquid viscosities are associated with longer SRT, a finding considered a normal variant in swallowing assessments. This study provides normative data for SRT.

More Related Videos

Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing
07:22

Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing

Published on: December 1, 2023

659
Assessing Pupil-linked Changes in Locus Coeruleus-mediated Arousal Elicited by Trigeminal Stimulation
07:26

Assessing Pupil-linked Changes in Locus Coeruleus-mediated Arousal Elicited by Trigeminal Stimulation

Published on: November 26, 2019

8.2K

Related Experiment Videos

Last Updated: Sep 13, 2025

Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models
08:32

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

Published on: March 1, 2015

21.5K
Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing
07:22

Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing

Published on: December 1, 2023

659
Assessing Pupil-linked Changes in Locus Coeruleus-mediated Arousal Elicited by Trigeminal Stimulation
07:26

Assessing Pupil-linked Changes in Locus Coeruleus-mediated Arousal Elicited by Trigeminal Stimulation

Published on: November 26, 2019

8.2K

Area of Science:

  • Swallowing physiology
  • Clinical assessment of dysphagia

Background:

  • Swallow onset is typically defined by bolus location.
  • Quantifying swallow events with swallow reaction time (SRT) can enhance swallow assessment.
  • Establishing normative SRT values in large, healthy populations using validated methods is limited.

Purpose of the Study:

  • To investigate SRT in a large cohort of healthy adults.
  • To examine the influence of demographic factors (age, sex) and bolus characteristics (viscosity, volume) on SRT.
  • To utilize the Modified Barium Swallow Impairment Profile (MBSImP) approach for standardized SRT measurement.

Main Methods:

  • Analysis of archival videofluoroscopic swallow studies (VFSS) from 195 healthy adults (aged 21-89).
  • Measurement of SRT across seven standardized swallow tasks with varying bolus viscosities (thin to extremely thick liquids) and a solid bolus.
  • Application of generalized estimating equation models to assess demographic and bolus effects on SRT.

Main Results:

  • Significant variability in SRT was observed across all swallow tasks in healthy adults.
  • Bolus viscosity was the only significant factor influencing SRT.
  • Increased bolus viscosity correlated with a longer SRT.

Conclusions:

  • Swallow reaction time (SRT) exhibits considerable variability in healthy adults across different bolus types.
  • Higher viscosities of liquids result in longer SRTs, which should be recognized as normal variations.
  • This research provides normative SRT data based on a widely used VFSS protocol, offering valuable reference points for clinical practice.