phonation

Summary

Summary: The process of producing vocal sounds by means of VOCAL CORDS vibrating in an expiratory blast of air.

Top Publications

  1. ncbi Acute stroke phase voluntary cough and correlation with maximum phonation time
    Zhou Zhou
    Institute of Neuroepidemiology and Tropical Neurology, University of Limoges, Limoges, France
    Am J Phys Med Rehabil 91:494-500. 2012
  2. ncbi Acoustic analysis of voice in Huntington's disease patients
    María Jesús Velasco García
    Service of Otolaryngology ENT, N a S a de Sonsoles Hospital, Avila, Spain
    J Voice 25:208-17. 2011
  3. ncbi Clinical implementation of laryngeal high-speed videoendoscopy: challenges and evolution
    Dimitar D Deliyski
    Communication Sciences and Disorders, University of South Carolina, Columbia, SC 29208, USA
    Folia Phoniatr Logop 60:33-44. 2008
  4. ncbi Measurement of vocal doses in speech: experimental procedure and signal processing
    Jan G Svec
    National Center for Voice and Speech, The Denver Center for the Performing Arts, 1245 Champa Street, Denver, CO 80204, USA
    Logoped Phoniatr Vocol 28:181-92. 2003
  5. ncbi Comparison of voice-use profiles between elementary classroom and music teachers
    Sharon L Morrow
    Department of Music Education, Westminster Choir College of Rider University, Princeton, New Jersey, USA
    J Voice 25:367-72. 2011
  6. pmc Laryngeal reinnervation using ansa cervicalis for thyroid surgery-related unilateral vocal fold paralysis: a long-term outcome analysis of 237 cases
    Wei Wang
    Department of Otorhinolaryngology Head and Neck Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
    PLoS ONE 6:e19128. 2011
  7. ncbi Characterization of raised phonation in an evoked rabbit phonation model
    Erik R Swanson
    Department of Otolaryngology, Vanderbilt University Bill Wilkerson Center for Otolaryngology and Communication Sciences, Nashville, Tennessee 37232 4480, USA
    Laryngoscope 119:1439-43. 2009
  8. ncbi Voice amplification as a means of reducing vocal load for elementary music teachers
    Sharon L Morrow
    Department of Music Education, Westminster Choir College of Rider University, Princeton, New Jersey 08540 3819, USA
    J Voice 25:441-6. 2011
  9. ncbi Development and testing of a portable vocal accumulator
    Harold A Cheyne
    Voice and Speech Laboratory, Massachusetts Eye and Ear Infirmary, Boston 02114, USA
    J Speech Lang Hear Res 46:1457-67. 2003
  10. ncbi Laryngeal reinnervation with the hypoglossal nerve. I. Physiology, histochemistry, electromyography, and retrograde labeling in a canine model
    R C Paniello
    Department of Otolaryngology-Head and Neck Surgery, Washington University School of Medicine, St Louis, Missouri 63110, USA
    Ann Otol Rhinol Laryngol 110:532-42. 2001

Detail Information

Publications275 found, 100 shown here

  1. ncbi Acute stroke phase voluntary cough and correlation with maximum phonation time
    Zhou Zhou
    Institute of Neuroepidemiology and Tropical Neurology, University of Limoges, Limoges, France
    Am J Phys Med Rehabil 91:494-500. 2012
    ..This study aimed to assess cough effectiveness after a stroke and to propose a bedside screening test...
  2. ncbi Acoustic analysis of voice in Huntington's disease patients
    María Jesús Velasco García
    Service of Otolaryngology ENT, N a S a de Sonsoles Hospital, Avila, Spain
    J Voice 25:208-17. 2011
    ..The aim of this study was to assess the degree of voice and speech abnormalities in a group of patients with HD and to analyze possible correlations with degree of disease severity...
  3. ncbi Clinical implementation of laryngeal high-speed videoendoscopy: challenges and evolution
    Dimitar D Deliyski
    Communication Sciences and Disorders, University of South Carolina, Columbia, SC 29208, USA
    Folia Phoniatr Logop 60:33-44. 2008
    ....
  4. ncbi Measurement of vocal doses in speech: experimental procedure and signal processing
    Jan G Svec
    National Center for Voice and Speech, The Denver Center for the Performing Arts, 1245 Champa Street, Denver, CO 80204, USA
    Logoped Phoniatr Vocol 28:181-92. 2003
    ..The doses measure the vocal load and can be used for studying the effects of vocal fold tissue exposure to vibration...
  5. ncbi Comparison of voice-use profiles between elementary classroom and music teachers
    Sharon L Morrow
    Department of Music Education, Westminster Choir College of Rider University, Princeton, New Jersey, USA
    J Voice 25:367-72. 2011
    ..In this study, total phonation time, fundamental frequency (F₀), and vocal intensity (dB SPL [sound pressure level]) were measured or ..
  6. pmc Laryngeal reinnervation using ansa cervicalis for thyroid surgery-related unilateral vocal fold paralysis: a long-term outcome analysis of 237 cases
    Wei Wang
    Department of Otorhinolaryngology Head and Neck Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
    PLoS ONE 6:e19128. 2011
    ..To evaluate the long-term efficacy of delayed laryngeal reinnervation using the main branch of the ansa cervicalis in treatment of unilateral vocal fold paralysis (UVFP) caused by thyroid surgery...
  7. ncbi Characterization of raised phonation in an evoked rabbit phonation model
    Erik R Swanson
    Department of Otolaryngology, Vanderbilt University Bill Wilkerson Center for Otolaryngology and Communication Sciences, Nashville, Tennessee 37232 4480, USA
    Laryngoscope 119:1439-43. 2009
    Our laboratory has developed an in vivo rabbit model to investigate the effects of phonation on expression and turnover of the vocal fold extracellular matrix...
  8. ncbi Voice amplification as a means of reducing vocal load for elementary music teachers
    Sharon L Morrow
    Department of Music Education, Westminster Choir College of Rider University, Princeton, New Jersey 08540 3819, USA
    J Voice 25:441-6. 2011
    ..Research has shown that individual voice-use parameters of phonation time, fundamental frequency and vocal intensity, as well as vocal load as calculated by cycle dose and distance ..
  9. ncbi Development and testing of a portable vocal accumulator
    Harold A Cheyne
    Voice and Speech Laboratory, Massachusetts Eye and Ear Infirmary, Boston 02114, USA
    J Speech Lang Hear Res 46:1457-67. 2003
    ..The current prototype PVA is pocket-sized (12 x 8.5 x 2 cm), lightweight (200 g), and capable of sampling 11 hr of voice-use data, including estimates of fundamental frequency, sound pressure level, and phonation duration.
  10. ncbi Laryngeal reinnervation with the hypoglossal nerve. I. Physiology, histochemistry, electromyography, and retrograde labeling in a canine model
    R C Paniello
    Department of Otolaryngology-Head and Neck Surgery, Washington University School of Medicine, St Louis, Missouri 63110, USA
    Ann Otol Rhinol Laryngol 110:532-42. 2001
    ..Laryngeal adductory pressure and induced phonation were obtained by stimulating the RLN while passing a pressure transducer balloon or humidified air through the ..
  11. ncbi Acoustic measures and self-reports of vocal fatigue by female teachers
    Anne Maria Laukkanen
    Department of Speech Communication and Voice Research, University of Tampere, Tampere, Finland
    J Voice 22:283-9. 2008
    ..text reading sample was recorded at habitual loudness and loudly (as in large classroom), (2) a prolonged phonation on [a:] was recorded at habitual speaking pitch and loudness, and (3) a questionnaire about voice quality, ease, ..
  12. ncbi On the use of the derivative of electroglottographic signals for characterization of nonpathological phonation
    Nathalie Henrich
    LAM UPMC, CNRS, Ministère de la Culture, 11 rue de Lourmel, 75015 Paris, France
    J Acoust Soc Am 115:1321-32. 2004
    ..It is shown that agreement with the glottal-flow measurements is much better than most threshold-based measurements in the case of sustained sounds...
  13. ncbi Ataxic dysarthria
    R D Kent
    University of Wisconsin Madison, 53705 2280, USA
    J Speech Lang Hear Res 43:1275-89. 2000
    ..seven men, seven women) with ataxic dysarthria for several speaking tasks, including sustained vowel phonation, syllable repetition, sentence recitation, and conversation...
  14. pmc Effects of raised-intensity phonation on inflammatory mediator gene expression in normal rabbit vocal fold
    Erik R Swanson
    Department of Otolaryngology, Vanderbilt University Bill Wilkerson Center for Otolaryngology and Communication Sciences, Nashville, TN, USA
    Otolaryngol Head Neck Surg 143:567-72. 2010
    To investigate the hypothesis that a transient episode of raised-intensity phonation causes a significant increase in vocal fold inflammatory messenger RNA (mRNA) expression in vivo.
  15. pmc Modulating phonation through alteration of vocal fold medial surface contour
    Ted Mau
    Departments of Otolaryngology Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
    Laryngoscope 122:2005-14. 2012
    1) To test whether alteration of the vocal fold medial surface contour can improve phonation and 2) to demonstrate that implant material properties affect vibration even when implantation is deep to the vocal fold lamina propria.
  16. ncbi Effect of voice quality on perceived height of English vowels
    A J Lotto
    University of Wisconsin, Madison, USA
    Phonetica 54:76-93. 1997
    Across a variety of languages, phonation type and vocal-tract shape systematically covary in vowel production. Breathy phonation tends to accompany vowels produced with a raised tongue body and/or advanced tongue root...
  17. ncbi Evaluation of dynamic magnetic resonance imaging in assessing velopharyngeal insufficiency during phonation
    Bekir Atik
    Department of Plastic and Reconstructive Surgery, Medical Faculty, Yuzuncu Yil University, Van, Turkey
    J Craniofac Surg 19:566-72. 2008
    ..In this study, efficacy of dynamic magnetic resonance imaging in the diagnosis of VPI is investigated...
  18. pmc Predictions of fundamental frequency changes during phonation based on a biomechanical model of the vocal fold lamina propria
    Kai Zhang
    School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA
    J Voice 23:277-82. 2009
    This study examines the local and global changes of fundamental frequency (F(0)) during phonation and proposes a biomechanical model of predictions of F(0) contours based on the mechanics of vibration of vocal fold lamina propria...
  19. ncbi Quantitative acoustic measurements for characterization of speech and voice disorders in early untreated Parkinson's disease
    J Rusz
    Department of Circuit Theory, Faculty of Electrical Engineering, Czech Technical University in Prague, Technicka 2, 116 27, Prague 6, Czech Republic
    J Acoust Soc Am 129:350-67. 2011
    ..The speech defects thus uncovered differ individually in various characteristics including phonation, articulation, and prosody.
  20. ncbi Model of evoked rabbit phonation
    Ping Jiang Ge
    Department of Otolaryngology, Vanderbilt University Bill Wilkerson Center for Otolaryngology and Communication Sciences, Nashville, Tennessee 37232 4480, USA
    Ann Otol Rhinol Laryngol 118:51-5. 2009
    We describe a method for eliciting phonation in an in vivo rabbit preparation using low-frequency, bipolar pulsed stimulation of the cricothyroid muscles with airflow delivered to the glottis.
  21. ncbi Ambulatory monitoring of disordered voices
    Robert E Hillman
    Department of Surgery, Harvard Medical School, MGH Center for Laryngeal Surgery and Voice Rehabilitation, One Bowdoin Square, Ilth Floor, Boston, MA 02114, USA
    Ann Otol Rhinol Laryngol 115:795-801. 2006
    ..monitoring of voice use employ miniature accelerometers placed at the base of the anterior neck to sense phonation. As it is hoped that such systems will help improve the clinical assessment and management of voice disorders, ..
  22. ncbi Phonation behavior of cooperatively foraging spinner dolphins
    Kelly J Benoit-Bird
    College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon 97330, USA
    J Acoust Soc Am 125:539-46. 2009
    ..Our results are unable to support the established paradigm for dolphin acoustic communication and suggest an alternate coordination mechanism in foraging spinner dolphins...
  23. pmc Objective acoustic analysis of pathological voices from patients with vocal nodules and polyps
    Jack J Jiang
    Department of Surgery, Division of Otolaryngology, Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisc, USA
    Folia Phoniatr Logop 61:342-9. 2009
    ..We aim to examine the abilities of objective acoustic analysis methods (nonlinear dynamic and traditional perturbation measures) to describe voices from individuals with vocal nodules and polyps...
  24. pmc Nonlinear source-filter coupling in phonation: theory
    Ingo R Titze
    Department of Speech Pathology and Audiology, The University of Iowa, Iowa City, Iowa 52242, USA
    J Acoust Soc Am 123:2733-49. 2008
    A theory of interaction between the source of sound in phonation and the vocal tract filter is developed...
  25. ncbi Effects of inhalatory abdominal wall movement on vertical laryngeal position during phonation
    J Iwarsson
    Department of Speech, Music, and Hearing, Royal Institute of Technology, KTH, Stockholm, Sweden
    J Voice 15:384-94. 2001
    ..of the abdominal wall, both with regard to the effect on vertical laryngeal position during the subsequent phonation. Seventeen male and 17 female healthy, vocally untrained subjects participated...
  26. ncbi Validity of jitter measures in non-quasi-periodic voices. Part II: the effect of noise
    Claudia Manfredi
    Universita degli Studi di Firenze, Department of Electronics and Telecommunications, Via S Marta 3, Firenze 50139, Italy it
    Logoped Phoniatr Vocol 36:78-89. 2011
    ..Hence, the use of a robust tool for voice analysis can give valid support to clinicians in term of reliability, reproducibility of results, and time-saving...
  27. ncbi Botulinum toxin type A: an effective treatment to restore phonation in laryngectomized patients unable to voice
    Luigi Bartolomei
    Neurology, San Bortolo Hospital, Vicenza, Italy
    Neurol Sci 32:443-7. 2011
    ..evaluated the efficacy of Botulinum toxin type A (BTXA) as an alternative to surgical intervention to facilitate phonation in 34 laryngectomized patients (31 males and 3 women) who were unable to produce tracheoesophageal voice because ..
  28. pmc Raised intensity phonation compromises vocal fold epithelial barrier integrity
    Bernard Rousseau
    Department of Otolaryngology, Vanderbilt University Bill Wilkerson Center for Otolaryngology and Communication Sciences, Nashville, Tennessee 37232 4480, USA
    Laryngoscope 121:346-51. 2011
    We investigated the hypothesis that 30 minutes of raised intensity phonation alters transcript levels of vocal fold intercellular tight junction proteins and disrupts the vocal fold epithelial barrier.
  29. ncbi Impairment of voice quality in paradoxical vocal fold motion dysfunction
    Kursat Yelken
    Department of Otolaryngology, Gaziomanpasa University, Tokat, Turkey
    J Voice 24:724-7. 2010
    ..To compare subjective and objective voice-quality parameters between asymptomatic paradoxical vocal fold motion dysfunction (PVFMD) patients and healthy individuals...
  30. ncbi Muscular patterns and activation levels of auxiliary breathing muscles and thorax movement in classical singing
    Viggo Pettersen
    Department of Music and Dance, University of Stavanger, Stavanger, Norway
    Folia Phoniatr Logop 57:255-77. 2005
    ..Further, muscle activity in the posterior neck (PN) was investigated in inhalation and phonation and, finally, TR, intercostal (INT), lateral abdominal (OBL) and anterior abdominal (RC) muscle loading in ..
  31. ncbi Automatic diagnosis of vocal fold paresis by employing phonovibrogram features and machine learning methods
    Daniel Voigt
    Department of Phoniatrics and Pediatric Audiology, University Hospital Erlangen, Bohlenplatz 21, D 91054 Erlangen, Germany
    Comput Methods Programs Biomed 99:275-88. 2010
    The clinical diagnosis of voice disorders is based on examination of the rapidly moving vocal folds during phonation (f0: 80-300Hz) with state-of-the-art endoscopic high-speed cameras...
  32. ncbi The activity patterns of neck muscles in professional classical singing
    Viggo Pettersen
    Stavanger University College, School of Art Education, Stavanger, Norway
    J Voice 19:238-51. 2005
    ..Muscle usage during inhalation and phonation and the relationship to changes in pitch and vocal loudness was of particular interest...
  33. ncbi Nonlinear dynamics of phonations in excised larynx experiments
    Jack J Jiang
    Department of Surgery, Division of Otolaryngology Head and Neck Surgery, University of Wisconsin Medical School, Madison, Wisconsin 53792 7375, USA
    J Acoust Soc Am 114:2198-205. 2003
    ..These findings might potentially assist investigators in understanding rough phonations and developing clinically valuable methodologies for the diagnosis of voice disorders...
  34. ncbi Model-based classification of nonstationary vocal fold vibrations
    Tobias Wurzbacher
    Department of Phoniatrics and Pediatric Audiology, University Hospital Erlangen, Medical School, Erlangen, Germany
    J Acoust Soc Am 120:1012-27. 2006
    ..reasons, the conventional clinical examination of vocal fold vibrations is done during stationary, sustained phonation. However, the conclusions drawn from a stationary phonation are restricted to the observed steady-state vocal ..
  35. ncbi The association between upper trapezius activity and thorax movement in classical singing
    V Pettersen
    School of Art Education, Stavanger University College, Stavanger, Norway
    J Voice 18:500-12. 2004
    ..During phonation, the upper TR contributes in the compression of upper TX, thus serving as an accessory muscle of expiration...
  36. pmc Voice assessment: updates on perceptual, acoustic, aerodynamic, and endoscopic imaging methods
    Daryush D Mehta
    Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Harvard Medical School Harvard MIT Division of Health Sciences and Technology, One Bowdoin Square, 11th Floor, Boston, MA 02114, USA
    Curr Opin Otolaryngol Head Neck Surg 16:211-5. 2008
    ..This paper describes recent advances in perceptual, acoustic, aerodynamic, and endoscopic imaging methods for assessing voice function...
  37. ncbi Peripheral motor dynamics of song production in the zebra finch
    Franz Goller
    Department of Biology, University of Utah, Salt Lake City, UT 84112, USA
    Ann N Y Acad Sci 1016:130-52. 2004
    ....
  38. ncbi Voice abnormalities and their relation with motor dysfunction in Parkinson's disease
    I Midi
    Department of Neurology, Marmara University Hospital, Istanbul, Turkey
    Acta Neurol Scand 117:26-34. 2008
    ....
  39. pmc Dependence of phonation threshold pressure and frequency on vocal fold geometry and biomechanics
    Zhaoyan Zhang
    UCLA School of Medicine, 31 24 Rehabilitation Center, 1000 Veteran Avenue, Los Angeles, CA 90095 1794, USA
    J Acoust Soc Am 127:2554-62. 2010
    Previous studies show that phonation onset occurs as two eigenmodes of the vocal folds are synchronized by the interaction between the vocal folds and the glottal flow...
  40. pmc Onset and offset phonation threshold flow in excised canine larynges
    Michael F Regner
    Department of Surgery, Division of Otolaryngology Head and Neck Surgery, University of Wisconsin Madison School of Medicine and Public Health, Madison, Wisconsin 53706, USA
    Laryngoscope 118:1313-7. 2008
    In this study, we examined the hypothesis that the minimum flow required for phonation onset, the onset phonation threshold flow (PTF), is greater than the minimum flow to sustain phonation, the offset PTF...
  41. ncbi A numerical analysis of phonation using a two-dimensional flexible channel model of the vocal folds
    T Ikeda
    Department of Aerospace Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Japan
    J Biomech Eng 123:571-9. 2001
    ..vocal folds coupled with an unsteady one-dimensional flow model is presented for an analysis of the mechanism of phonation. The vocal fold is approximated by springs and dampers distributed in the main flow direction that are enveloped ..
  42. pmc A computational study of the effect of false vocal folds on glottal flow and vocal fold vibration during phonation
    Xudong Zheng
    Department of Mechanical and Aerospace Engineering, The George Washington University, Suite T729, 801 22nd Street, Philips Hall, NW, Washington, D C 20052, USA
    Ann Biomed Eng 37:625-42. 2009
    ..However, the effects of false vocal folds on the vocal fold vibration and the glottal aerodynamic during phonation remain unclear...
  43. pmc Phonation threshold flow measurements in normal and pathological phonation
    Peiyun Zhuang
    Department of Surgery, Division of Otolaryngology Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
    Laryngoscope 119:811-5. 2009
    b>Phonation threshold flow (PTF) may provide a tool to assess laryngeal function and could differentiate between normal and pathological voices...
  44. pmc Human brain activation during phonation and exhalation: common volitional control for two upper airway functions
    Torrey M J Loucks
    Laryngeal and Speech Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
    Neuroimage 36:131-43. 2007
    b>Phonation is defined as a laryngeal motor behavior used for speech production, which involves a highly specialized coordination of laryngeal and respiratory neuromuscular control...
  45. ncbi Numerical analysis of effects of transglottal pressure change on fundamental frequency of phonation
    Shinji Deguchi
    Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
    Ann Otol Rhinol Laryngol 116:128-34. 2007
    In humans, a decrease in transglottal pressure (Pt) causes an increase in the fundamental frequency of phonation (F0) only at a specific voice pitch within the modal register, the mechanism of which remains unclear.
  46. ncbi Effects of surgery on the phonation threshold pressure in patients with vocal fold polyps
    Tyng Guey Wang
    Department of Rehabilitation, National Taiwan University Hospital and National Taiwan University, College of Medicine, Taipei, Taiwan
    J Formos Med Assoc 109:62-8. 2010
    There are few objective measurements to assess the results of surgery for vocal fold polyps. This study investigated the effects of surgery on the phonation threshold pressure (PTP) in patients with vocal fold polyps.
  47. ncbi Phonation threshold pressure measurement with a semi-occluded vocal tract
    Ingo R Titze
    National Center for Voice and Speech, The Denver Center for the Performing Arts, Denver, CO, USA
    J Speech Lang Hear Res 52:1062-72. 2009
    The purpose of this article was to determine if a semi-occluded vocal tract could be used to measure phonation threshold pressure...
  48. ncbi Modeling the role of nonhuman vocal membranes in phonation
    P Mergell
    Department of Phoniatrics and Pedaudiology, University Erlangen Nuremberg, Germany
    J Acoust Soc Am 105:2020-8. 1999
    ..that vocal membranes of an optimal angle and length can substantially lower the subglottal pressure at which phonation is supported, thus increasing vocal efficiency, and that this effect is most pronounced at high frequencies...
  49. ncbi Mechanical stress during phonation in a self-oscillating finite-element vocal fold model
    Chao Tao
    Department of Surgery, Division of Otolaryngology Head and Neck Surgery, University of Wisconsin Medical School, 1300 University Avenue, Madison, WI 53792 7375, USA
    J Biomech 40:2191-8. 2007
    The stress information during phonation in the vocal folds is helpful in understanding the etiologies of vocal trauma and its related vocal diseases, such as nodules...
  50. pmc Nonlinear source-filter coupling in phonation: vocal exercises
    Ingo Titze
    National Center for Voice and Speech, The Denver Center for the Performing Arts, Denver, Colorado, USA
    J Acoust Soc Am 123:1902-15. 2008
    ....
  51. ncbi Computational aeroacoustics of phonation, part I: Computational methods and sound generation mechanisms
    Wei Zhao
    Department of Surgery, University of Wisconsin Medical School, Madison 53792 7375, USA
    J Acoust Soc Am 112:2134-46. 2002
    The aerodynamic generation of sound during phonation was studied using direct numerical simulations of the airflow and the sound field in a rigid pipe with a modulated orifice...
  52. ncbi The influence of subglottal acoustics on laboratory models of phonation
    Zhaoyan Zhang
    UCLA School of Medicine, 31 24 Rehabilitation Center, 1000 Veteran Avenue, Los Angeles, California 90095 1794, USA
    J Acoust Soc Am 120:1558-69. 2006
    Many previous laboratory investigations of phonation involving physical models, excised larynges, and in vivo canine larynges have failed to fully specify the subglottal system...
  53. ncbi Direct measurement of onset and offset phonation threshold pressure in normal subjects
    Randall L Plant
    Department of Otolaryngology Head and Neck Surgery, Eastern Virginia Medical School, Norfolk, Virginia 23507, USA
    J Acoust Soc Am 116:3640-6. 2004
    b>Phonation threshold pressures were directly measured in five normal subjects in a variety of voicing conditions...
  54. pmc Influence of flow separation location on phonation onset
    Zhaoyan Zhang
    UCLA School of Medicine, 31 24 Rehabilitation Center, 1000 Veteran Avenue, Los Angeles, California 90095 1794, USA
    J Acoust Soc Am 124:1689-94. 2008
    The influence of flow separation location on eigenmode synchronization and phonation onset was investigated in a two-dimensional, aeroelastic, continuum model of phonation...
  55. ncbi Phonation threshold pressure predictions using viscoelastic properties up to 1,400 Hz of injectables intended for Reinke's space
    Sarah A Klemuk
    Department of Communication Sciences and Disorders, The University of Iowa, 334B SHC, Iowa City, IA 52242, USA
    Laryngoscope 120:995-1001. 2010
    ..carbomer and well-known vocal fold injectables at vocalization frequencies using established and new instrumentation, and 2) to predict phonation threshold pressures using a computer model with intended placement in Reinke's space.
  56. ncbi Neurorrhaphy of the recurrent laryngeal nerve
    Fong Fu Chou
    Department of Surgery, Chang Gung Memorial Hospital at Kaohsiung, Chang Gung University, Kaohsiung Hsien, Taiwan, ROC
    J Am Coll Surg 197:52-7. 2003
    ..The objective of this study was to learn whether direct neurorrhaphy is necessary if the recurrent laryngeal nerve is severed during thyroid or parathyroid surgery...
  57. ncbi A quantitative study of the medial surface dynamics of an in vivo canine vocal fold during phonation
    Michael Doellinger
    Laryngeal Dynamics Laboratory, Division of Head and Neck Surgery, UCLA School of Medicine, University of California Los Angeles, 31 24 Rehab Center, 1000 Veteran Avenue, Los Angeles, CA 90095 1794, USA
    Laryngoscope 115:1646-54. 2005
    The purpose of this study was to measure the medial surface dynamics of a canine vocal fold during phonation. In particular, displacements, velocities, accelerations, and relative phase velocities of vocal fold fleshpoints were reported ..
  58. ncbi On pitch jumps between chest and falsetto registers in voice: data from living and excised human larynges
    J G Svec
    Centre for Communication Disorders, Medical Healthcom, Ltd, Prague, Czech Republic
    J Acoust Soc Am 106:1523-31. 1999
    ..A small magnitude of the leap interval was associated with a smooth chest-falsetto transition in the female subject...
  59. ncbi Theoretical assessment of unsteady aerodynamic effects in phonation
    Michael H Krane
    Center for Advanced Information Processing, Rutgers University, Piscataway, New Jersey 08854, USA
    J Acoust Soc Am 120:1578-88. 2006
    ..The analysis suggests that glottal flow may be considered quasisteady only insofar as traditional assumptions concerning glottal jet behavior can be confirmed...
  60. pmc A coupled sharp-interface immersed boundary-finite-element method for flow-structure interaction with application to human phonation
    X Zheng
    Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
    J Biomech Eng 132:111003. 2010
    ..The FSI solver is used to simulate flow-induced vibrations of the vocal folds during phonation. Both two- and three-dimensional models have been examined and qualitative, as well as quantitative comparisons, ..
  61. ncbi Comparing phonation threshold flow and pressure by abducting excised larynges
    Daniel G Hottinger
    Department of Surgery, Division of Otolaryngology Head and Neck Surgery, University of Wisconsin Medical School, Madison, Wisconsin 53706, USA
    Laryngoscope 117:1695-9. 2007
    This experiment studied a new aerodynamic parameter, phonation threshold flow, along with phonation threshold pressure, by varying prephonatory glottal width in canine larynges ex vivo...
  62. ncbi Phonation threshold pressure across the pitch range: preliminary test of a model
    Nancy Pearl Solomon
    Army Audiology and Speech Center, Walter Reed Army Medical Center, Washington, DC 20307 5001, USA
    J Voice 21:541-50. 2007
    This study sought to examine the specific relationship between phonation threshold pressure (PTP) and voice fundamental frequency (F(0)) across the pitch range...
  63. ncbi On pressure-frequency relations in the excised larynx
    Fariborz Alipour
    Department of Speech Pathology and Audiology, The University of Iowa, Iowa City, Iowa 52242, USA
    J Acoust Soc Am 122:2296-305. 2007
    ..of this study was to find relationships between subglottal pressure (P(s)) and fundamental frequency (F(0)) of phonation in excised larynx models...
  64. ncbi Pulse register phonation in Diana monkey alarm calls
    Tobias Riede
    Department of Psychology, 245 Uris Hall, Cornell University, Ithaca, New York 14853, USA
    J Acoust Soc Am 113:2919-26. 2003
    ..First, although pulsed phonation has been described in a variety of mammalian vocalizations, very little is known about the underlying production ..
  65. ncbi Dependence of phonation threshold pressure on vocal tract acoustics and vocal fold tissue mechanics
    Roger W Chan
    Otolaryngology Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, Texas 75390 9035, USA
    J Acoust Soc Am 119:2351-62. 2006
    ..Specifically, analytical results predicted that phonation threshold pressure (Pth) increases with the viscous shear properties of the vocal fold, but decreases with vocal ..
  66. ncbi Usefulness of laryngeal phonation CT in the diagnosis of vocal cord paralysis
    Bum Soo Kim
    Department of Radiology, Kangnam St Mary s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
    AJR Am J Roentgenol 190:1376-9. 2008
    The purpose of this study was to determine the effectiveness of laryngeal phonation CT for the diagnosis of vocal cord paralysis by examining the physiologic and functional changes in the larynx during vowel phonation in patients with ..
  67. ncbi Botulinum toxin injection and airflow stability in spasmodic dysphonia
    Giovanna Cantarella
    Department of Otolaryngology, Fondazione Ospedale Maggiore Policlinico, Mangiagalli e Regina Elena, IRCCS, Pad Alfieri, Via Commenda 10, 20122 Milan, Italy
    Otolaryngol Head Neck Surg 134:419-23. 2006
    ..The aim of this study was to analyze the effects of botulinum toxin (BT) injection on airflow stability, by measuring mean phonatory oral airflow and its coefficient of variation (CV), in subjects with adductor spasmodic dysphonia (SD)...
  68. ncbi Immediate recurrent laryngeal nerve reconstruction and vocal outcome
    Eiji Yumoto
    Department of Otolaryngology Head and Neck Surgery, Graduate School of Medicine, Kumamoto University, Kumamoto, Japan
    Laryngoscope 116:1657-61. 2006
    ..The objective of this prospective study was to assess the long-term effects of immediate reconstruction of the recurrent laryngeal nerve (RLN) during thyroid cancer extirpation on postoperative phonatory function...
  69. ncbi Dynamic B-mode ultrasound imaging of vocal fold vibration during phonation
    Chen Gia Tsai
    Graduate Institutes of Musicology, National Taiwan University, Taipei, Taiwan
    Ultrasound Med Biol 35:1812-8. 2009
    ..This is, to the best of our knowledge, the first time that vocal fold vibration physiology has been studied using B-mode imaging and Echo-PIV...
  70. ncbi Regression tree approach to studying factors influencing acoustic voice analysis
    Dimitar D Deliyski
    Department of Communication Sciences and Disorders, University of South Carolina, Columbia, SC 29208, USA
    Folia Phoniatr Logop 58:274-88. 2006
    ..Software systems and gender were highly influential on measurements of jitter and shimmer. Environmental noise was shown to be the prominent factor that affects VQM when SNR levels are below 30 dB...
  71. ncbi Specially programmed respiratory muscle training for singers by using respiratory muscle training device (Ultrabreathe)
    Do Hyun Nam
    Department of Otorhinolaryngology, Yongdong Severance Hospital, Yonsei University College of Medicine, Seoul 135 720, Korea
    Yonsei Med J 45:810-7. 2004
    ..function, the maximum inspiratory pressure (MIP) and the maximum expiratory pressure (MEP), and the maximum phonation time (MPT) in five female voice-majors students after undergoing specially programmed respiratory muscle ..
  72. ncbi Period and glottal width irregularities in vocally normal speakers
    Heather Shaw Bonilha
    Department of Communication Sciences and Disorders, University of South Carolina, Columbia, SC 29208, USA
    J Voice 22:699-708. 2008
    ..The lack of confidence in rating irregularity through stroboscopy and the discrepancies between visual ratings and objective measures requires future research efforts...
  73. ncbi Noninvasive assessment of laryngeal phonation function using color Doppler ultrasound imaging
    T Y Hsiao
    Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
    Ultrasound Med Biol 27:1035-40. 2001
    ..Therefore, the CDI could be used as a potential tool for assessing the phonation function in the larynx nonintrusively.
  74. pmc Somatosensory feedback modulates the respiratory motor program of crystallized birdsong
    Roderick A Suthers
    School of Medicine and Department of Biology, Indiana University, Bloomington, IN 47405, USA
    Proc Natl Acad Sci U S A 99:5680-5. 2002
    ..This muscle response was absent or reduced during quiet respiration, suggesting it is specifically linked to phonation. Our findings indicate that somatosensory feedback to expiratory muscles elicits compensatory adjustments that ..
  75. pmc Disentangling the effects of phonation and articulation: hemispheric asymmetries in the auditory N1m response of the human brain
    Hannu Tiitinen
    Apperception and Cortical Dynamics, Department of Psychology, University of Helsinki, POB 9, FIN 00014, Finland
    BMC Neurosci 6:62. 2005
    ..how the spectral cues caused by articulation are reflected in cortical speech processing when combined with phonation, the other major part of speech production manifested as the fundamental frequency (F0) and its harmonic integer ..
  76. ncbi Influence of vocal fold scarring on phonation: predictions from a finite element model
    David A Berry
    Laryngeal Dynamics Laboratory, Division of Head and Neck Surgery, David Geffen School of Medicine, The University of California, Los Angeles, Los Angeles, California, USA
    Ann Otol Rhinol Laryngol 114:847-52. 2005
    A systematic study of the influence of vocal fold scarring on phonation was conducted...
  77. ncbi High-speed video analysis of the phonation onset, with an application to the diagnosis of functional dysphonias
    T Braunschweig
    University Hospital Jena, Department of Phoniatrics and Pediatric Audiology, Stoystr 3, 07743 Jena, Germany
    Med Eng Phys 30:59-66. 2008
    ..Using digital high-speed recordings, the phonation onset process was recorded in real-time for 8-10 different sound pressure levels for each subject...
  78. ncbi The speaker's formant
    Irene Velsvik Bele
    Faculty of Education, Volda University College, Volda, Norway
    J Voice 20:555-78. 2006
    ..trained voices had a higher energy level in the SPF region compared with the untrained, significantly so in loud phonation. The SPF seemed to be related to both sufficiently strong overtones and a glottal setting, allowing for a ..
  79. ncbi Lexical frequency and voice assimilation
    Mirjam Ernestus
    Max Planck Institute for Psycholinguistics, Radboud University Nijmegen, Wundtlaan 1, 6525 XD Nijmegen, The Netherlands
    J Acoust Soc Am 120:1040-51. 2006
    ..A higher frequency leads not only to acoustic reduction but also to more assimilation...
  80. ncbi Pitch (F0) and formant profiles of human vowels and vowel-like baboon grunts: the role of vocalizer body size and voice-acoustic allometry
    Drew Rendall
    Department of Psychology and Neuroscience, University of Lethbridge, Lethbridge, Alberta, T1K 3M4 Canada
    J Acoust Soc Am 117:944-55. 2005
    ..Implications for general vocal allometry are discussed as are implications for speech origins theories, and challenges to them, related to laryngeal position and vocal tract length...
  81. ncbi Loud speech in realistic environmental noise: phonetogram data, perceptual voice quality, subjective ratings, and gender differences in healthy speakers
    Maria Södersten
    Department of Logopedics and Phoniatrics, Karolinska University Hospital, Huddinge, Stockholm, Sweden
    J Voice 19:29-46. 2005
    ..Having to make oneself heard over noise resulted in higher SPL and F0, as expected, and in higher phonation time. The total reading time was slightly longer in continuous noise than in intermittent noise...
  82. ncbi Ventricular fold vibration in voice production: a high-speed imaging study with kymographic, acoustic and perceptual analyses of a voice patient and a vocally healthy subject
    Per Ake Lindestad
    Department of Logopedics and Phoniatrics, Karolinska University Hospital Huddinge, Stockholm, Sweden
    Logoped Phoniatr Vocol 29:162-70. 2004
    ..man with chronic laryngitis and one vocally healthy man, were examined during pressed and breathy sustained phonation. Perceived roughness in the voice quality correlated to irregularities in true vocal fold vibrations as well as ..
  83. ncbi Resonant voice: spectral and nasendoscopic analysis
    Cara G Smith
    Department of Speech Pathology and Audiology, Wendell Johnson Speech and Hearing Center, University of Iowa, Iowa City, IA 52242 1078, USA
    J Voice 19:607-22. 2005
    ..Visual-perceptual judgments of the videoendoscopic data indicated that laryngeal vestibule constriction was not consistently associated with resonant voice production...
  84. ncbi Resonance strategies revealed in recorded tenor high notes
    Harm K Schutte
    Groningen Voice Research Laboratory, Department of Biomedical Engineering, University Medical Center Groningen, Groningen, The Netherlands
    Folia Phoniatr Logop 57:292-307. 2005
    ....
  85. ncbi The influence of perceived sexual orientation on fricative identification
    Benjamin Munson
    Department of Speech Language Hearing Sciences, University of Minnesota, Minneapolis 55455, USA
    J Acoust Soc Am 119:2427-37. 2006
    ..Results suggest that listeners are sensitive to the association between fricatives' center frequencies and perceived sexual orientation in women's voices, but not in men's voices...
  86. ncbi Relationship between masking levels and phonatory stability in normal-speaking women
    Carole T Ferrand
    Department of Speech Language Hearing Sciences, Hofstra University, Hempstead, New York 11549, USA
    J Voice 20:223-8. 2006
    ..Intraindividual differences between conditions for each variable are discussed in the framework of auditory versus kinesthetic feedback...
  87. ncbi Analysis of fundamental frequency, jitter, shimmer and vocal intensity in children with phonological disorders
    Haydée F Wertzner
    Department of Physical Therapy, Speech and Hearing Therapy, Occupation Therapy, Medical School, University of Sao Paulo
    Braz J Otorhinolaryngol 71:582-8. 2005
    ..The analysis of vocal parameters becomes important in the process of diagnosis of this disorder, since voice disorders could interfere in the production of speech sounds...
  88. ncbi Artificially lengthened and constricted vocal tract in vocal training methods
    Irene Velsvik Bele
    Volda University College, Faculty of Education, Volda, Norway
    Logoped Phoniatr Vocol 30:34-40. 2005
    ..Another vocal exercise technique involves lengthening the vocal tract; for example, the method of phonation into small tubes...
  89. ncbi Voice low tone to high tone ratio: a potential quantitative index for vowel [a:] and its nasalization
    Guo She Lee
    Department of Otolaryngology, I Lan Hospital, Department of Health ROC, I Lan 260, Taiwan, ROC
    IEEE Trans Biomed Eng 53:1437-9. 2006
    ..76, p < 0.01), as well. We conclude that VLHR may become a potential quantitative index of hypernasal speech and can be applied in either basic or clinical studies...
  90. ncbi A parametric model of the vocal tract area function for vowel and consonant simulation
    Brad H Story
    Speech Acoustics Laboratory, Department of Speech and Hearing Sciences, University of Arizona, Tucson, Arizona 85721, USA
    J Acoust Soc Am 117:3231-54. 2005
    ..All parameters can be specified either as static or time varying, which allows for multiple levels of coarticulation or coproduction...
  91. ncbi Two-dimensional model of vocal fold vibration for sound synthesis of voice and soprano singing
    Seiji Adachi
    ATR Human Information Science Laboratories, 2 2 2 Hikaridai, Keihanna Science City, Kyoto 619 0288 Japan
    J Acoust Soc Am 117:3213-24. 2005
    ....
  92. ncbi Multidimensional voice evaluation in pretreatment glottic carcinoma
    Naoko Matsubara
    Department of Otorhinolaryngology, Faculty of Medicine, Kyusyu University, Fukuoka, Japan
    Folia Phoniatr Logop 57:173-80. 2005
    ..included in this study involving psychoacoustic evaluation by doctors, acoustic analysis, phonogram, maximum phonation time and stroboscopy before treatment...
  93. ncbi Immediate effects of 'voice massage' treatment on the speaking voice of healthy subjects
    Anne Maria Laukkanen
    Department of Speech Communication and Voice Research, University of Tampere, Tampere, Finland
    Folia Phoniatr Logop 57:163-72. 2005
    ..After VM no significant changes were observed in voice parameters or perceptual quality, but ease of phonation and reduced tension in the neck, shoulders and back were reported...
  94. ncbi Evaluating the influence of warmup on singing voice quality using acoustic measures
    Ofer Amir
    Department of Communication Disorders, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
    J Voice 19:252-60. 2005
    ..05). The results of this study provide valid support for the advantageous effect of vocal warmup on voice quality and present acoustic analysis as a valuable and sensitive tool for quantifying this effect...
  95. ncbi The effects of fundamental frequency level on voice onset time in normal adult male speakers
    Christopher R McCrea
    Florida State University, Tallahassee, USA
    J Speech Lang Hear Res 48:1013-24. 2005
    ..The findings indicated that researchers must take into account the F(0) level at which voiceless stop VOT is measured...
  96. ncbi Perception of pitch location within a speaker's F0 range
    Douglas N Honorof
    Haskins Laboratories, 270 Crown Street, New Haven, Connecticut 06511, USA
    J Acoust Soc Am 117:2193-200. 2005
    ..Regardless, the present data provide strong support for the hypothesis that listeners are able to locate an F0 reliably within a range without external context or prior exposure to a speaker's voice...
  97. ncbi [VOT analysis in cleft palate patients after surgery]
    M J Gámiz
    Hospital de Poniente, El Ejido, Almeria
    Cir Pediatr 19:27-32. 2006
    ..Also VOT measures were influenced by cleft lip and delay in beginning of ortodoncy. Hearing loss is associated with increased VOT. Our results are based in a correct sample and statistical analysis by multiple lineal regression...
  98. pmc The emergence of mature gestural patterns in the production of voiceless and voiced word-final stops
    Susan Nittrouer
    Utah State University, USA
    J Acoust Soc Am 117:351-64. 2005
    ..Finally, context effects (isolation or sentence) showed that the acoustic correlates of syllable-final voicing are attenuated when words are produced in sentences, rather than in isolation...
  99. ncbi Clinical experience with collagen injection of the vocal fold: a study of 155 patients
    Miwako Kimura
    Department of Otorhinolaryngology and Head and Neck Surgery, Graduate School of Medicine and Faculty of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Auris Nasus Larynx 35:67-75. 2008
    ..This study evaluated the results of laryngeal collagen injection...
  100. ncbi Source and filter adjustments affecting the perception of the vocal qualities twang and yawn
    Ingo R Titze
    Department of Speech Pathology and Audiology, National Center for Voice and Speech, The University of Iowa, Iowa City 52242, USA
    Logoped Phoniatr Vocol 28:147-55. 2003
    ..Listeners demonstrated variable perceptions in both continua with poor inter-subject, intra-subject, and inter-group reliability...
  101. ncbi A role for the second subglottal resonance in lexical access
    Steven M Lulich
    Speech Communication Group, MIT, and Harvard MIT Division of Health Sciences and Technology, Cambridge, Massachusetts 02139, USA
    J Acoust Soc Am 122:2320-7. 2007
    ..N. Stevens, J. Phonetics 17, 3-46 (1989)]. The results support a model of lexical access in which articulatory-acoustic discontinuities subserve phonological feature identification...

Research Grants64

  1. Coordination of Respiration with Deglutition & Phonation in Ataxia-Telangiectasia
    Maureen Lefton Greif; Fiscal Year: 2007
    ..will exhibit disruptions in the temporal relationships between respiration-deglutition and between respiration-phonation. The following specific aims will be addressed: Specific Aim #1...
  2. Genone-wide Discovery of Molecular Alterations in Head and Neck Cancer
    Victor E Velculescu; Fiscal Year: 2010
    ..Oral cancer affects physical appearance and vital functions, including taste, swallowing, and speech/phonation. In addition to significant morbidity, head and neck cancer result in ~12,000 deaths, of which oral cancer will ..
  3. Response of aging intrinsic laryngeal muscles to chronic electrical stimulation
    Colleen A McMullen; Fiscal Year: 2013
    ..The larynx is part of a complex sensorimotor system that serves as both a vibratory source for phonation and as a regulatory valving mechanism that protects the airway from the incursion of foreign bodies and food...
  4. Integrative Neural Systems Underlying Vital Aerodigestive Tract Functions
    Joanne Robbins; Fiscal Year: 2010
    ..These central and peripheral disorders result in dysphagia, and disorders affecting sleep, breathing and phonation. Traditional interventions previously regarded as safe, are being investigated as risk factors that may lead to ..
  5. Identification of Biomechanically Valid Cell Therapeutics for Vocal Fold Scar
    Rebecca S Bartlett; Fiscal Year: 2013
    ..AT and BM) can be activated to a vocal fold fibroblast (VFF) genotype by vibratory strain which mimics human phonation. A bioreactor capable of reproducing the vocal fold mechanoenvironment ex vivo will be used to test this ..
  6. Electromechanical reshaping of tissue
    Brian Wong; Fiscal Year: 2010
    ..functional and structural roles, including the support of soft tissue (ear and nose), airway patency (trachea), phonation (larynx), and joint movement (i.e.,TMJ)...
  7. In Vivo Measures of Vocal Function Response to Environmental Conditions
    MARY JOYCE SANDAGE; Fiscal Year: 2012
    ..pharyngeal thermister temperature probe and infrared thermal imaging) with clinical measures of vocal function (phonation threshold pressure and perceived vocal effort) allows for systematic study of the effect of environmental ..
  8. Exogenous growth factors for reversal of age-related laryngeal muscle denervation
    Joseph Stemple; Fiscal Year: 2011
    ..The larynx is part of a complex motor system that serves as a vibratory source of phonation and as a regulator that separates and protects the airway from the digestive tract...
  9. Bilayered Vocal Fold Tissue Engineering
    Jennifer L Long; Fiscal Year: 2013
    ..Finally, vibration and phonation are assessed in both cases as well as in de-epithelialized TE-VFC to identify the role of epithelium in voice ..
  10. Molecular Pathophysiology of Acute Phonotrauma
    Bernard Rousseau; Fiscal Year: 2013
    ..mobile tissues in the body, the cellular response to repeated cycles of trauma and inflammation secondary to phonation are unique to this specialized connective tissue...
  11. The Effects of Hyper and Hypocapnia on Phonatory Laryngeal Resistance
    Amanda I Gillespie; Fiscal Year: 2012
    ..gap by assessing the effects of varying concentrations of arterial carbon dioxide on laryngeal function during phonation. The secondary objective is to assess the inverse function, and that is the effects of laryngeal adjustments ..
  12. Molecular mechanisms of aging in the intrinsic laryngeal muscles
    Colleen McMullen; Fiscal Year: 2009
    ..The larynx is part of a complex motor system that serves dually as the vibratory source of phonation and as a valve that separates and protects the airway from the digestive tract...
  13. Kinaesthetic Loss as a Marker for Spasmodic Dysphonia
    Peter J Watson; Fiscal Year: 2012
    ..MTD is caused by abnormal phonation believed to be in response to swelling of vocal fold tissue...
  14. A Study of Ventilatory Homeostasis and Phonatory Behavior During Aerobic Exercise
    AARON SCOTT ZIEGLER; Fiscal Year: 2012
    ..Of interest for the present study is mechanical energy transfer in vocal fold (VF) injury during phonation. One important source of such injury is perpendicular VF impact stress (force/area), which in turn is partially ..
  15. CHD1, Chromatin Dynamics, and Salivary Gland Differentiation
    JOSEPH ADAM HALL; Fiscal Year: 2010
    ..Hyposecretion of mucins by the SLGs results in xerostomia, characterized by difficulty in phonation and deglutition, mucosal ulcerations, and an increase in the frequency of dental caries...
  16. Aerodynamic Study for Laryngeal Function Assessment Using Airflow Interruption Me
    Jack J Jiang; Fiscal Year: 2013
    ..During phonation, the larynx serves as an energy transducer, transferring aerodynamic energy in the form of subglottal pressure (..
  17. Ambulatory monitoring of vocal function to improve voice disorder assessment
    Robert E Hillman; Fiscal Year: 2013
    ..Devices that use a neck-placed miniature accelerometer (ACC) as a phonation sensor have shown the best potential for unobtrusive long-term monitoring of vocal function...
  18. Biomechanical Characterization of Vocal Fold Tissues
    Roger W Chan; Fiscal Year: 2012
    ..data and new constitutive models with existing computational biomechanical models of vocal fold posturing and phonation. A major benefit of this research will be an improvement in the computer models of vocal fold posturing and ..
  19. Neuromuscular control of the larynx
    DINESH KHATRI CHHETRI; Fiscal Year: 2013
    ..long-range aim of this project is to improve our understanding of the role the intrinsic laryngeal muscles in phonation. More specifically, we plan to activate each laryngeal muscle in a graded fashion to predict the following: (1) ..
  20. Adjustable balloon implant for medialization thyroplasty
    Matthew R Hoffman; Fiscal Year: 2012
    ..Postoperative complications such as penetration and breathy phonation due to hypoadduction or dyspnea and pressed phonation due to hyperadduction are not uncommon;therefore, being ..
  21. Physiological effects of hyperosmotic vocal fold surface fluid
    Mahalakshmi Sivasankar; Fiscal Year: 2011
    ..effects of hyperosmotic VFSF induced by oral breathing at low humidity are evident in clinical measures of Phonation Threshold Pressure and (4) Demonstrate reversal of the effects of hyperosmotic VFSF induced during oral ..
  22. Associations between laryngeal and cough dysfunction in bulbar amyotrophic latera
    Deanna Britton; Fiscal Year: 2012
    ..movements during cough will be measured by applying techniques previously used to measure TVF movements during phonation. These measurement techniques will be used to examine potential associations between cough related airflow ..
  23. Source-Filter Interaction in Speech
    Ingo R Titze; Fiscal Year: 2013
    ..It can also affect the phonation threshold pressure, making it either more easy or more difficult to self-sustain vocal fold oscillation...
  24. Laryngeal muscular control of voice production and quality
    Zhaoyan Zhang; Fiscal Year: 2013
    ..Laryngeal muscle activation also leads to simultaneous changes in vocal fold geometry, the influence of which on phonation is unclear...
  25. Influence of subglottic anatomy on voice production
    Scott L Thomson; Fiscal Year: 2013
    ..Aim 2: Explore the influence of subglottic anatomy on structural, acoustic, and aerodynamic aspects of phonation using complementary synthetic and computational models...
  26. Throat Clearing, Coughing, and Alternative Behaviors
    Heather Shaw Bonilha; Fiscal Year: 2010
    ..The first aim is to compare biomechanical, physiological components of phonation, phonation onset, soft throat clear, hard throat clear, silent cough, and hard cough within and between ..
  27. Influence of surface adhesion forces on vocal fold stress and function
    Scott Thomson; Fiscal Year: 2009
    ..Specific Aim 3: Investigate sensitivity of vocal fold stress and function during phonation to airway surface liquid properties using computational vocal fold models...
  28. Biomechanical Mechanisms of Phonation
    Zhaoyan Zhang; Fiscal Year: 2013
    DESCRIPTION (provided by applicant): Despite significant advancement in our understanding of the phonation process in general, it still remains unclear how changes in individual geometrical and material properties of the vocal system ..
  29. CORTICAL-SUBCORTICAL INTERACTION IN PD AND NORMAL SPEECH
    John J Sidtis; Fiscal Year: 2013
    ..are that: cortical lateral asymmetry is associated with fluency;subcortical regions are strongly associated with phonation, particularly the first two formants, and these are shifted during DBS;when DBS strengthens phonation, an ..
  30. Biomechanics of the False Vocal Folds
    Fariborz Alipour; Fiscal Year: 2013
    ..This goal, by necessity, must include the development and use of effective models of phonation, and quantification of the biomechanical, aerodynamic, and acoustic factors that control laryngeal function and ..
  31. Treating Laryngeal Hyperfunction with Flow Phonation
    HYLAN PICKETT; Fiscal Year: 2013
    DESCRIPTION (provided by applicant): The purposes of the proposed study are: a) to determine whether Flow Phonation can decrease Laryngeal Resistance (Rlaw)1 in patients with Muscle Tension Dysphonia (MTD);and b) establish the ..
  32. Glottal jet aerodynamics
    MICHAEL KRANE; Fiscal Year: 2012
    ..focusing on the contribution of the glottal jet to (1) glottal impedance, (2) aeroacoustic sources in phonation, and (3) energy losses that limit voice efficiency, and how these are quantified by aerodynamic and acoustic ..
  33. CRICOTHYROID REFLEX/RECURRENT LARYNGEAL NERVE PARALYSIS
    Gayle Woodson; Fiscal Year: 1992
    ..this reflex would significantly improve the airway, while preserving voluntary cricothyroid contraction during phonation. Previous studies indicate that the cricothyroid is an accessory muscle of respiration and that inspiratory ..
  34. Auditory enhancement in female speech
    Andrew Lotto; Fiscal Year: 2001
    ..A large number of acoustic measures theoretically related to breathy phonation will be computed. Using Principal Components Analysis...
  35. PHYSIOLOGY AND MEASUREMENT OF VOCAL FOLD VIBRATION
    Jack Jiang; Fiscal Year: 2000
    ..The long range goals of this experimental work are to better understand both normal and pathological phonation and to contribute to the development of valid, comprehensive, and noninvasive clinically feasible methods of ..
  36. REGULATION OF VOCAL FOLD HYDRATION AND PHONATION
    Kimberly Fisher; Fiscal Year: 2003
    ..The research plan aims to test the overall hypothesis that the ease of phonation can be regulated by selectively increasing or decreasing vocal fold hydration, epithelial cell volume and ..
  37. PROLINE-RICH GLYCOPROTEIN MASTICATORY LUBRICATION
    Lawrence Tabak; Fiscal Year: 1991
    ..of masticatory (and/or prosthetic) surfaces in relation to the soft tissues of the mouth leads to difficulty in phonation, mastication and deglutition...
  38. Flow Visualization in the Canine Larynx During Phonation
    Siddarth Khosla; Fiscal Year: 2006
    ..In addition the candidate will develop his own computational model of airflow in the canine larynx during phonation. The coursework will be supplemented by tutorials in speech science given by the candidate?s mentor, Dr...
  39. Interaction Affecting Craniofacial Muscle Differentiatio
    Drew Noden; Fiscal Year: 2004
    ..in their development contribute to a wide range of problems in vision, facial expression, mastication, and phonation. However, little is known about processes controlling the differentiation and maturation of branchial and extra-..
  40. ALPHA-ADRENOCEPTOR SUBTYPE & CL CURRENT IN PAROTID ACINI
    CHARLES BOCKMAN; Fiscal Year: 2000
    ..in patients with xerostomia where lack of saliva results in painful tongue and mucosa; problems with taste and phonation, swallowing, chewing, tooth decay and loss; and increased risk of microbial overgrowth in the oral cavity...
  41. Aerodynamic and Acoustic Models of Phonation
    Ronald Scherer; Fiscal Year: 2007
    Project summary: Phonation is a component of speech communication, with a highly complex interplay of physiological and physical properties...
  42. QUANTIFICATION OF IRREGULAR VOCAL FOLD OSCILLATIONS
    David Berry; Fiscal Year: 2001
    ..3) Quantify the eigenmodes, eigenfrequencies, and damping ratios of the folds. To what extent are the phonation frequencies of aim 1 governed by eigenfrequencies? Can the phonatory regimes of aim 1 and the bifurcations of ..
  43. Effect of Vocalization on Tissue Protein Levels in the Acute Vocal Fold Wound
    Bernard Rousseau; Fiscal Year: 2009
    ..Historically, support for voice rest has been driven by theories that implicate phonation associated trauma with delayed wound healing...
  44. MEASURES OF VOCAL DYSFUNCTION IN NEUROLOGICAL DISORDERS
    David Hanson; Fiscal Year: 1999
    ..This research will examine how vocal strain, or effortful phonation changes the vibratory patterns of the vocal folds in normal subjects...
  45. NEUROMUSCULAR COMPARTMENTS OF LARYNGEAL MUSCLES
    Ira Sanders; Fiscal Year: 2000
    ..horizontal and appears to swivel the arytenoid cartilage in order to precisely position the vocal process during phonation. It is hypothesized that most laryngeal muscles are composed of neuromuscular compartments...
  46. PORTABLE VOICE ACCUMULATOR
    Helen Hanson; Fiscal Year: 1999
    ..The device will acquire and store data that describe the phonation time, intensity of the phonation, distribution of fundamental frequency, and intervals of dysphonic phonation...
  47. CRANIOFACIAL ANOMALIES: TREATMENT EVALUATION
    Jeffrey Krischer; Fiscal Year: 1980
    ..Clinical measures describing cases in terms of speech quality (articulation, resonance, and phonation), cosmetic appearance and dental occlusion are related to subjective values that scale individual preferences ..
  48. NONINTRUSIVE TECHNIQUES TO EVALUATE PHONATORY FUNCTION
    Ingo Titze; Fiscal Year: 1991
    The long-range objective of this research is two-fold, (1) to quantify a theory fo phonation, and (2) to evaluate nonintrusive techniques that may have potential for studying phonatory control and diagnosing voice disorders...
  49. Role of Aquaporin in vocal fold epithelial water fluxes.
    Danielle Lodewyck; Fiscal Year: 2004
    ..If so, aquaporins may provide an intrinsic mechanism for regulation of vocal fold hydration and phonation. We will first demonstrate the presence of two aquaporin water channels in native vocal fold epithelial tissue ..
  50. Combined Modality Treatment of ADSD
    ERIN SILVERMAN; Fiscal Year: 2004
    ..Dependent variables to be examined include voice-related Quality of Life, duration of benefit, as well as acoustic source measures (obtained from both connected speech and sustained phonation) of phonation.
  51. COMPARATIVE STUDY OF MECHANISMS OF VOCAL PRODUCTION
    Stephen Nowicki; Fiscal Year: 1991
    ..Songbird phonation is known to entail both lateralization as well as coordinated interaction of the two sides of the functionally ..
  52. Phonated Intervals During Fluency-Inducing Conditions
    Jason Davidow; Fiscal Year: 2007
    ..the present proposal is to improve stuttering treatment, specifically a treatment for adults entitled Modifying Phonation Intervals (MPI), a variant of prolonged speech...
  53. NEW INSTRUMENT FOR INTERFEROMETRIC LARYNGOSCOPY
    James Castracane; Fiscal Year: 1992
    ..Spatially-resolved speckle interferograms of the superior surface of the vocal folds obtained during phonation will provide for real time analysis of vocal fold dynamics to assist in the early detection of mass lesions, to ..
  54. INTRAOPERATIVE MEASURES OF VOCAL FOLD YOUNGS MODULUS
    Gerald Berke; Fiscal Year: 1992
    ..by using transtracheal stimulation to simulate normal muscular contraction and glottal configuration during phonation. This modulus value will then be used as the target for the degree of vocal fold augmentation of the affected ..
  55. Acquisition and Structure of Hmong
    MARLYS MACKEN; Fiscal Year: 2004
    ..the speech of adults (10 subjects), with the goals of determining the relationship between laryngeal mechanisms, phonation type and pitch, and the representational structures at the acoustic and phonological levels...
  56. Vocalization and Speech Breathing in Infants
    DOUGLAS PARHAM; Fiscal Year: 2007
    unreadable] DESCRIPTION (provided by applicant): Infant phonation research has focused on how infants use laryngeal and articulatory modification to produce speech, but made little reference to how the respiratory system underlies ..
  57. MODULATION OF AUDITORY AND MOTOR MODES IN VOCAL LEARNING
    Heather Williams; Fiscal Year: 1993
    ..relies upon the ability to make comparisons among the motor patterns used to drive the musculature controlling phonation and respiration, the auditory consequences of those motor patterns, and the auditory model which is to be ..
  58. Generating sexually differentiated vocal patterns
    Erik Zornik; Fiscal Year: 2004
    ..Information relating neuronal function with vocalization is essential to understanding phonation and disorders such as dysarthrias...
  59. PERCEPTUAL ADAPTATIONS FOR COMMUNICATION
    Charles Brown; Fiscal Year: 1993
    ..One goal of this research is to identify specializations in phonation and reception that act to counter the impediments to communication found in nature...
  60. Speech Kinematics in Parkinson's Disease
    Jessica Huber; Fiscal Year: 2004
    ....
  61. AEROACOUSTICS OF VOICE
    Fariborz Alipour; Fiscal Year: 2008
    ..The long-range objective of this research is to establish broad range, accurate, and reliable theories about phonation that can be useful in establishing refined and applicable concepts and approaches for helping people with voice ..
  62. Quantitative Modeling of Speech
    Brad H Story; Fiscal Year: 2010
    ....
  63. DYNAMIC PATTERNS OF SPEECH AERODYNAMICS IN CHILDREN
    LAURA KOENIG; Fiscal Year: 2003
    ....