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Related Experiment Video

Updated: Jul 4, 2026

Video Imaging and Spatiotemporal Maps to Analyze Gastrointestinal Motility in Mice
07:41

Video Imaging and Spatiotemporal Maps to Analyze Gastrointestinal Motility in Mice

Published on: February 3, 2016

An automatic method to quantify mucosal waves via videokymography.

Jack J Jiang1, Yu Zhang, Michael P Kelly

  • 1Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA. jiang@surgery.wisc.edu

The Laryngoscope
|June 12, 2008
PubMed
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A new least squares method quantifies vocal fold lip vibrations using videokymography (VKG). This technique reveals amplitude variations along the vocal fold length, aiding biomechanical analysis of vocal fold vibration.

Area of Science:

  • Laryngology and Voice Science
  • Biomechanical Analysis of Vocal Fold Vibration

Background:

  • Vocal fold vibration exhibits four distinct patterns related to specific vocal fold lips.
  • Understanding these vibratory patterns is crucial for diagnosing and treating voice disorders.

Purpose of the Study:

  • To introduce and validate a novel least squares method for quantifying vocal fold lip vibratory properties.
  • To analyze vocal fold vibration using videokymography (VKG) and assess the impact of subglottal pressure and line-scan position.

Main Methods:

  • A methodological study utilizing videokymography (VKG), a line-scan imaging technique.
  • Analysis of 17 excised canine larynges under varying subglottal pressures and line-scan positions.
  • Application of an automatic mucosal wave extraction method to quantify vibration of individual vocal fold lips.

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Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing
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Last Updated: Jul 4, 2026

Video Imaging and Spatiotemporal Maps to Analyze Gastrointestinal Motility in Mice
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Video Imaging and Spatiotemporal Maps to Analyze Gastrointestinal Motility in Mice

Published on: February 3, 2016

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

  • Subglottal pressure variations produced results consistent with prior research.
  • Vocal fold amplitude was significantly greatest at the midpoint, followed by the anterior portion, and lowest posteriorly (P < .001).
  • Frequency and phase delay showed no significant changes along the vocal fold length.

Conclusions:

  • The proposed least squares method facilitates straightforward determination of four sets of vocal fold vibratory parameters.
  • This approach enables effective examination of biomechanical parameter influences on vocal fold vibrations.