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

1.7K
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,...
1.7K
Cardiopulmonary Resuscitation V: Advanced Airway Management Techniques01:30

Cardiopulmonary Resuscitation V: Advanced Airway Management Techniques

20
Airway management is essential in emergency and surgical medicine, ensuring ventilation and oxygenation in patients who cannot maintain their own airway. Clinicians use a range of techniques and devices to secure the airway, depending on the patient’s condition and the clinical context. Key methods include endotracheal intubation, rapid sequence intubation (RSI), supraglottic airway devices, and advanced visualization aids. In cases where these approaches fail, surgical airway...
20
Endoscopic Studies I: Bronchoscopy and Thoracoscopy01:30

Endoscopic Studies I: Bronchoscopy and Thoracoscopy

231
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...
231

You might also read

Related Articles

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

Sort by
Same author

Glottal Area Waveform Measurements for Healthy Female and Male Speakers in Typical, High-Frequency, and Soft Phonation.

Journal of speech, language, and hearing research : JSLHR·2026
Same author

3D reconstruction of vocal fold dynamics with laser high-speed videoendoscopy in children.

Laryngoscope investigative otolaryngology·2024
Same author

What kind of phonation causes the strongest vocal fold collision? - A hemi-larynx phonation contact pressure study.

Technisches Messen : TM·2024
Same author

Analyzing Vocal Fold Frequency Dynamics Using High-Speed 3D Laser Video Endoscopy.

The Laryngoscope·2024
Same author

An Investigation of Acoustic Back-Coupling in Human Phonation on a Synthetic Larynx Model.

Bioengineering (Basel, Switzerland)·2023
Same author

On the Alignment of Acoustic and Coupled Mechanic-Acoustic Eigenmodes in Phonation by Supraglottal Duct Variations.

Bioengineering (Basel, Switzerland)·2023

Related Experiment Video

Updated: Jul 17, 2025

Learning Modern Laryngeal Surgery in a Dissection Laboratory
07:30

Learning Modern Laryngeal Surgery in a Dissection Laboratory

Published on: March 18, 2020

8.1K

Influence of Perspective Distortion in Laryngoscopy.

Reinhard Veltrup1, Stefan Kniesburges1, Marion Semmler1

  • 1University Hospital Erlangen, Medical School, Division of Phoniatrics and Pediatric Audiology at the Department of Otorhinolaryngology Head and Neck Surgery, Friedrich-Alexander-University Erlangen-Nürnberg, Germany.

Journal of Speech, Language, and Hearing Research : JSLHR
|August 31, 2023
PubMed
Summary

Recording angle in 2D laryngoscopy significantly impacts vocal fold symmetry assessment, potentially misinterpreting dynamics. Careful consideration of angle and controlled conditions are crucial for accurate glottal area waveform analysis.

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

562
Author Spotlight: Advancing Awake Nasotracheal Intubation with Flexible Video Rhino-Laryngoscopes
03:58

Author Spotlight: Advancing Awake Nasotracheal Intubation with Flexible Video Rhino-Laryngoscopes

Published on: August 2, 2024

780

Related Experiment Videos

Last Updated: Jul 17, 2025

Learning Modern Laryngeal Surgery in a Dissection Laboratory
07:30

Learning Modern Laryngeal Surgery in a Dissection Laboratory

Published on: March 18, 2020

8.1K
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

562
Author Spotlight: Advancing Awake Nasotracheal Intubation with Flexible Video Rhino-Laryngoscopes
03:58

Author Spotlight: Advancing Awake Nasotracheal Intubation with Flexible Video Rhino-Laryngoscopes

Published on: August 2, 2024

780

Area of Science:

  • Laryngology and Speech Science
  • Biomedical Imaging
  • Acoustic Phonetics

Background:

  • Two-dimensional (2D) laryngoscopy is vital for assessing vocal fold (VF) dynamics.
  • Objective parameter calculation from glottal area waveform (GAW) aids in quantitative analysis.
  • Understanding imaging influences is crucial for accurate interpretation.

Purpose of the Study:

  • To evaluate the impact of recording angle and distance on 2D laryngoscopy imaging.
  • To assess the influence on 2D parameter calculations derived from the glottal area waveform (GAW).
  • To quantify the effects of perspective distortion on VF dynamics analysis.

Main Methods:

  • Utilized two high-speed camera setups to synchronously record an oscillating synthetic VF model.
  • Varied lateral recording angles and recording distances, with a reference superior perspective camera.
  • Calculated GAW from segmented glottis, deriving symmetry, periodicity, and closure parameters.

Main Results:

  • Lateral recording angle significantly influenced visual perception and VF symmetry parameters, particularly the Amplitude Symmetry Index (up to 2.6%/°).
  • Inexperienced observers may misinterpret VF symmetry due to angle-induced perspective distortion.
  • Recording distance only affected the Maximum Area Declination Rate.

Conclusions:

  • Recording angle in 2D laryngoscopy requires careful consideration during visual inspection of VF dynamics.
  • Most objective parameters were unaffected by perspective distortion.
  • Symmetry measures demand controlled boundary conditions to prevent misdiagnosis and misinterpretation.