A method for assessing the regional vibratory pattern of vocal folds by analysing the video recording of stroboscopy

2001 ◽  
Vol 39 (3) ◽  
pp. 273-278 ◽  
Author(s):  
J. S. Lee ◽  
E. Kim ◽  
M. -W. Sung ◽  
K. H. Kim ◽  
M. Y. Sung ◽  
...  
Keyword(s):  
Video Recording ◽  
Vocal Folds ◽  
Vibratory Pattern

Historical Approaches in Revealing the Singing Voice, PART 1

2016 ◽  
pp. 964-990
Author(s):  
Harm K. Schutte
Keyword(s):  
Vocal Folds ◽  
Singing Voice ◽  
Voice Production ◽  
Non Invasive ◽  
Vocal Registers ◽  
Laryngeal Imaging ◽  
Nineteenth And Twentieth Centuries ◽  
Vibratory Pattern ◽  
Opening And Closing

Reviewing hundreds of years of history, this chapter details the development of means of visualizing the larynx and the vocal folds, and explores how these technologies influenced theories of voice production. Key investigators in vocal physiology are discussed, and their contributions put into context with modern understandings of voice production. These leaders helped bring about the growth of the field of laryngology, which occurred in parallel with improvements in laryngeal imaging. The chapter tracks these developments, starting with Garcia’s laryngeal mirror, then continues through the rest of the nineteenth and twentieth centuries. Among the innovations described are the use of stroboscopy to study the opening and closing vibratory pattern in different vocal registers; the development and application in Groningen of videokymography to examine fast and irregular vibratory events; and the development of VoceVista, a non-invasive tool which combines electroglottography with acoustical information on the sung production.

Microvascular Lesions of the True Vocal Fold

1998 ◽  
Vol 107 (6) ◽  
pp. 472-476 ◽  
Author(s):  
Gregory N. Postma ◽  
Mark S. Courey ◽  
Robert H. Ossoff
Keyword(s):  
Medical Therapy ◽  
Functional Significance ◽  
Vocal Fold ◽  
Speech Therapy ◽  
Vocal Folds ◽  
Indications For Surgery ◽  
Recurrent Hemorrhage ◽  
Polyp Formation ◽  
Vibratory Pattern ◽  
Repetitive Trauma

Microvascular lesions, also called varices or capillary ectasias, in contrast to vocal fold polyps with telangiectatic vessels, are relatively small lesions arising from the microcirculation of the vocal fold. Varices are most commonly seen in female professional vocalists and may be secondary to repetitive trauma, hormonal variations, or repeated inflammation. Microvascular lesions may either be asymptomatic or cause frank dysphonia by interrupting the normal vibratory pattern, mass, or closure of the vocal folds. They may also lead to vocal fold hemorrhage, scarring, or polyp formation. Laryngovideostroboscopy is the key in determining the functional significance of vocal fold varices. Management of patients with a varix includes medical therapy, speech therapy, and occasionally surgical vaporization. Indications for surgery are recurrent hemorrhage, enlargement of the varix, development of a mass in conjunction with the varix or hemorrhage, and unacceptable dysphonia after maximal medical and speech therapy due to a functionally significant varix.

Vibratory pattern of vocal folds under tension asymmetry

2006 ◽  
Vol 135 (3) ◽  
pp. 438-444 ◽  
Author(s):  
Rebecca Maunsell ◽  
Maurice Ouaknine ◽  
Antoine Giovanni ◽  
Agrício Crespo
Keyword(s):  
Vocal Folds ◽  
Vibratory Pattern

Vibratory Pattern of the Vocal Folds

1981 ◽  
Vol 33 (2) ◽  
pp. 73-99 ◽  
Author(s):  
A.W. Kelman
Keyword(s):  
Vocal Folds ◽  
Vibratory Pattern

Visualizing the Pediatric Airway: Three-Dimensional Modeling of Endoscopic Images

1996 ◽  
Vol 105 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Michael E. Dunham ◽  
Rosalee N. Wolf
Keyword(s):  
Video Recording ◽  
Three Dimensional ◽  
Vocal Folds ◽  
Three Dimensions ◽  
Cross Sectional ◽  
Pediatric Airway ◽  
Airway Lumen ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
Complex Anatomy

Three-dimensional reconstruction of medical images has emerged as an important visualization tool for studying complex anatomy. These tools have found important applications in neurology and plastic surgery using computed tomography (CT) and magnetic resonance imaging (MRI) data. However, CT and MRI do not sufficiently delineate lesions of the pediatric airway. Inspection through the rod lens telescope remains the standard diagnostic method. A video recording of an endoscopic procedure is essentially a sequence of two-dimensional images captured as the telescope traverses the airway lumen. Using digitized endoscopic video recordings and computer graphics reconstruction techniques, we have developed a preliminary three-dimensional modeling system for the pediatric airway. A series of normal and abnormal telescopic airway examinations were video recorded. Serial sections were obtained by digitizing the video images at uniform intervals as the scope traversed the airway lumen between the vocal folds and the carina. The digitized images were calibrated and used to reconstruct the airway lumen in three dimensions. Classifying airway abnormalities according to the minimal cross-sectional area or with descriptive terms can be subjective and dependent on the endoscopist's observational skills. We hope that this preliminary work will lead to more precise and understandable methods for representing complex airway lesions.

A Subharmonic Vibratory Pattern in Normal Vocal Folds

1996 ◽  
Vol 39 (1) ◽  
pp. 135-143 ◽  
Author(s):  
Jan G. Švec ◽  
Harm K. Schutte ◽  
Donald G. Miller
Keyword(s):  
Vocal Folds ◽  
Simple Shape ◽  
Subharmonic Vibration ◽  
Vibratory Pattern ◽  
Subharmonic Frequency

This study observes in detail an F 0 /2 (sounding an octave below an original tone) subharmonic vibratory pattern produced in a normal larynx. Simultaneous electroglottographic and photoglottographic measurements reveal two different open phases within a subharmonic cycle—the first shorter with a simple shape, the second longer with a shape containing a “ripple.” Such parameters as the large open quotient (ca. 0.8) and the high airflow values (ca. 1000 cm 3 /s) distinguish this phonation from the vocal fry (pulse) register. Using an electronic divider to track the subharmonic frequency, a method has been developed to observe the subharmonic vibration of the vocal folds stroboscopically. The stroboscopic visualization reveals an unusual mucosal movement during the “ripple,” characterized by an opening movement of the upper margins, which interrupts the closing movement of the vocal folds. An explanation is offered that this vibratory pattern arises as a consequence of detuning of the usually identical frequencies of the dominant modes of the vocal folds, with 3:2 entrainment replacing the normal 1:1 pattern.

Enhancing Clinical Supervision Using High-Definition Real-Time Digital Recording, Annotation, and Bluetooth Technology

2019 ◽  
Vol 4 (2) ◽  
pp. 356-362
Author(s):  
Jennifer W. Means ◽  
Casey McCaffrey
Keyword(s):  
Graduate Students ◽  
Data Collection ◽  
Real Time ◽  
Clinical Supervision ◽  
Video Recording ◽  
Advanced Technology ◽  
High Definition ◽  
Recording Technology ◽  
Self Confidence ◽  
Additional Data Collection

Purpose The use of real-time recording technology for clinical instruction allows student clinicians to more easily collect data, self-reflect, and move toward independence as supervisors continue to provide continuation of supportive methods. This article discusses how the use of high-definition real-time recording, Bluetooth technology, and embedded annotation may enhance the supervisory process. It also reports results of graduate students' perception of the benefits and satisfaction with the types of technology used. Method Survey data were collected from graduate students about their use and perceived benefits of advanced technology to support supervision during their 1st clinical experience. Results Survey results indicate that students found the use of their video recordings useful for self-evaluation, data collection, and therapy preparation. The students also perceived an increase in self-confidence through the use of the Bluetooth headsets as their supervisors could provide guidance and encouragement without interrupting the flow of their therapy sessions by entering the room to redirect them. Conclusions The use of video recording technology can provide opportunities for students to review: videos of prospective clients they will be treating, their treatment videos for self-assessment purposes, and for additional data collection. Bluetooth technology provides immediate communication between the clinical educator and the student. Students reported that the result of that communication can improve their self-confidence, perceived performance, and subsequent shift toward independence.

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