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

Larynx01:21

Larynx

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, corniculates, and...
Respiratory System Abnormal Finding II: Palpation and Auscultation01:31

Respiratory System Abnormal Finding II: Palpation and Auscultation

In assessing respiratory abnormalities, palpation and auscultation are critical tools for detecting and interpreting various pathophysiological changes. These techniques provide insight into underlying disorders by evaluating tactile sensations and sounds produced by the respiratory system.
Palpation Findings
During a respiratory assessment, palpation can reveal several vital abnormalities:
Endoscopic Studies I: Bronchoscopy and Thoracoscopy01:30

Endoscopic Studies I: Bronchoscopy and Thoracoscopy

Endoscopy is a non-surgical medical technique used to examine a person's internal organs and vessels. This lesson will focus on two types of endoscopic studies: bronchoscopy and thoracoscopy.
Bronchoscopy
Description
Bronchoscopy is a procedure that involves direct visualization of the larynx, trachea, and bronchi for diagnostic and therapeutic purposes. A flexible fiber optic or rigid bronchoscope is used to carry out the procedure. The fiber-optic bronchoscope is more frequently used due to...
Endoscopic Procedures III: Video Capsule Endoscopy01:28

Endoscopic Procedures III: Video Capsule Endoscopy

Capsule endoscopy, or wireless or video capsule endoscopy, is a diagnostic procedure for examining the entire gastrointestinal tract. Patients swallow a capsule about the size of a vitamin tablet. The capsule is equipped with a transmitter, a battery, an LED light source, and a color video camera to capture images throughout the gastrointestinal tract. This procedure is particularly useful for diagnosing conditions such as Crohn's disease, ulcerative colitis, tumors, polyps, ulcers, unexplained...
Suctioning the Oropharyngeal Airway01:25

Suctioning the Oropharyngeal Airway

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...
Esophageal Achalasia01:27

Esophageal Achalasia

Esophageal achalasia is a chronic neurogenic disorder characterized by impaired relaxation of the lower esophageal sphincter (LES) and absent or ineffective peristalsis in the distal esophagus. This leads to a functional obstruction without a physical blockage, despite significant disruption of esophageal motility.EtiologyAchalasia is caused by degeneration of the myenteric (Auerbach's) plexus, specifically the loss of inhibitory ganglion cells that produce vasoactive intestinal peptide (VIP)...

You might also read

Related Articles

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

Sort by
Same author

Declining anthropogenic aerosols amplify Northern Hemisphere Hadley circulation weakening in the 21st century.

Nature communications·2026
Same author

Search for Magnetic Monopoles and Stable High-Electric-Charge Objects in 13 Tev Proton-Proton Collisions with the ATLAS Detector.

Physical review letters·2020
Same author

Measurement of <math></math> production with the hadronically decaying boson reconstructed as one or two jets in <i>pp</i> collisions at <math> </math> with ATLAS, and constraints on anomalous gauge couplings.

The European physical journal. C, Particles and fields·2020
Same author

Study of <math></math> and <math></math> production in <math></math> collisions at <math> </math> and search for anomalous quartic gauge couplings with the ATLAS experiment.

The European physical journal. C, Particles and fields·2020
Same author

Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector.

The European physical journal. C, Particles and fields·2020
Same author

Measurement of detector-corrected observables sensitive to the anomalous production of events with jets and large missing transverse momentum in <math></math> collisions at <math> </math>  TeV using the ATLAS detector.

The European physical journal. C, Particles and fields·2020
Same journal

Laryngeal Injuries Following General Endotracheal Anesthesia: A Case Series.

The Annals of otology, rhinology, and laryngology·2026
Same journal

Clinical and Voice Outcome Differences in Vocal Cord Cysts with and Without Sulcus Vocalis: Insights From a Tertiary Center in Saudi Arabia.

The Annals of otology, rhinology, and laryngology·2026
Same journal

Bioabsorbable Stenting in a Case of Severe Pediatric Posterior Glottic Stenosis.

The Annals of otology, rhinology, and laryngology·2026
Same journal

Efficacy and Safety of Finafloxacin Otic Suspension, 0.3% for the Treatment of Acute Otitis Externa: Results from two Phase III Randomized Clinical Studies.

The Annals of otology, rhinology, and laryngology·2026
Same journal

Evaluation Of the Expression Levels Of SerpinB3/B4/B10, Interleukin-17 As Biomarkers For Chronic Rhinosinusitis With Nasal Polyps.

The Annals of otology, rhinology, and laryngology·2026
Same journal

Correlation of Patient-Reported Symptoms With Rhinogram Features Beyond Simple Airway Resistance.

The Annals of otology, rhinology, and laryngology·2026
See all related articles

Related Experiment Video

Updated: Jul 1, 2026

Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
10:13

Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions

Published on: November 25, 2017

Videostroboscopy of human vocal fold paralysis.

J A Sercarz1, G S Berke, Y Ming

  • 1Division of Head and Neck Surgery, University of California-Los Angles Medical Center.

The Annals of Otology, Rhinology, and Laryngology
|July 1, 1992
PubMed
Summary
This summary is machine-generated.

Human vocal cord paralysis, often due to recurrent or superior laryngeal nerve damage, shows asymmetric traveling wave motion during stroboscopy. This asymmetry is a key diagnostic indicator in laryngeal paralysis.

More Related Videos

Minimally Invasive Murine Laryngoscopy for Close&#45;Up Imaging of Laryngeal Motion During Breathing and Swallowing
07:45

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

Published on: December 1, 2023

Manufacturing Process for Non-Adhesive Super-Soft Vocal Fold Models
06:24

Manufacturing Process for Non-Adhesive Super-Soft Vocal Fold Models

Published on: January 5, 2024

Related Experiment Videos

Last Updated: Jul 1, 2026

Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
10:13

Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions

Published on: November 25, 2017

Minimally Invasive Murine Laryngoscopy for Close&#45;Up Imaging of Laryngeal Motion During Breathing and Swallowing
07:45

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

Published on: December 1, 2023

Manufacturing Process for Non-Adhesive Super-Soft Vocal Fold Models
06:24

Manufacturing Process for Non-Adhesive Super-Soft Vocal Fold Models

Published on: January 5, 2024

Area of Science:

  • Otolaryngology
  • Neurology
  • Speech Science

Background:

  • Laryngeal paralysis diagnosis is challenging due to infrequent stroboscopic studies and lack of lesion site documentation.
  • Understanding vocal fold vibration dynamics is crucial for diagnosing laryngeal paralysis.

Purpose of the Study:

  • To investigate the characteristics of vocal fold vibration in human laryngeal paralysis using stroboscopy and glottography.
  • To identify objective diagnostic markers for laryngeal paralysis, differentiating between superior and recurrent laryngeal nerve involvement.

Main Methods:

  • Unilateral infiltration of recurrent and superior laryngeal nerves with lidocaine in volunteers to simulate paralysis.
  • Videostroboscopic analysis, photoglottography, and electroglottography synchronized to assess vocal fold motion.
  • Studied 20 patients with untreated laryngeal paralysis.

Main Results:

  • The primary finding was significant asymmetry in traveling wave motion on stroboscopy of the paralyzed larynx.
  • Normal vocal folds exhibited faster wave velocity and greater mucosal wave distance compared to paralyzed folds.
  • No symmetric traveling wave was observed in any patient or volunteer with laryngeal paralysis.

Conclusions:

  • Asymmetric traveling wave motion is a consistent finding in human laryngeal paralysis, regardless of nerve involvement.
  • Synchronized glottography provides valuable timing information for asymmetric laryngeal vibrations.
  • These findings enhance diagnostic capabilities for laryngeal paralysis.