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https://www.readbyqxmd.com/read/27913092/evaluation-of-phonatory-behavior-and-voice-quality-in-patients-with-multiple-sclerosis-treated-with-deep-brain-stimulation
#1
Manfred Pützer, Wolfgang Wokurek, Jean Richard Moringlane
OBJECTIVES: The effect of deep brain stimulation (DBS) on phonatory behavior and voice quality in eight patients with multiple sclerosis (MS) was examined instrumentally and perceptually. The acoustic signals of vowel productions obtained from patients (produced with and without stimulation) and from a group of 16 healthy control speakers were analyzed to prove statistically the changes of phonatory behavior and voice quality. STUDY DESIGN: This is a randomized study...
November 30, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/27912151/euclidean-distances-as-measures-of-speaker-similarity-including-identical-twin-pairs-a-forensic-investigation-using-source-and-filter-voice-characteristics
#2
Eugenia San Segundo, Athanasios Tsanas, Pedro Gómez-Vilda
There is a growing consensus that hybrid approaches are necessary for successful speaker characterization in Forensic Speaker Comparison (FSC); hence this study explores the forensic potential of voice features combining source and filter characteristics. The former relate to the action of the vocal folds while the latter reflect the geometry of the speaker's vocal tract. This set of features have been extracted from pause fillers, which are long enough for robust feature estimation while spontaneous enough to be extracted from voice samples in real forensic casework...
November 17, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27899468/favorable-swallowing-outcomes-following-vagus-nerve-sacrifice-for-vagal-schwannoma-resection
#3
Mira A Patel, Danielle F Eytan, Justin Bishop, Joseph A Califano
OBJECTIVE: To determine the impact of unilateral vagal sacrifice for vagal schwannoma on postoperative swallowing function. STUDY DESIGN: Case series, chart review. SETTING: Academic medical institution. SUBJECTS AND METHODS: Ten patients underwent vagus nerve sacrifice for vagal schwannoma resection. Archived pathology records dating from 1985 through 2012 at our institution were retrospectively queried for cases of vagal schwannoma with vagus nerve sacrifice...
November 29, 2016: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/27893084/feasibility-of-clinical-endoscopy-and-stroboscopy-in-children-with-bilateral-vocal-fold-lesions
#4
Stephanie R C Zacharias, Susan Baker Brehm, Barbara Weinrich, Lisa Kelchner, Meredith Tabangin, Alessandro de Alarcon
Purpose: The purpose of this study was to examine the utility of flexible and rigid endoscopy and stroboscopy for the identification of anatomical and physiological features in children with bilateral vocal fold lesions. The secondary purpose was to describe the age distribution of patients who could tolerate use of the different types of endoscopes. Method: This cross-sectional clinic-based study included 38 children (ages 5 to 12 years) diagnosed with bilateral vocal fold lesions via videoendoscopy...
November 1, 2016: American Journal of Speech-language Pathology
https://www.readbyqxmd.com/read/27882556/3d-analysis-of-the-movements-of-the-laryngeal-cartilages-during-singing
#5
Fabian Unteregger, Flurin Honegger, Silke Potthast, Salome Zwicky, Julia Schiwowa, Claudio Storck
OBJECTIVE: The vocal range of untrained singers rarely exceeds one and a half octaves, but professional singers have a range of at least two and a half octaves. The aim of this study was to better understand the muscle and cartilage movements responsible for the control of vocal pitch in singing. STUDY DESIGN: Prospective study. METHODS: We recruited 49 female professional singers (25 sopranos and 24 altos) and analyzed laryngeal three-dimensional images derived from high-resolution computed tomography scans obtained at the mean speaking fundamental frequency (F0) and at one (F1) and two octaves (F2) above this pitch...
November 24, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27878913/response-of-an-ovine-laryngeal-injury-model-to-a-novel-fibrosis-inhibitor
#6
Jacqueline Allen
BACKGROUND: Vocal fold injury results in severe voice alteration that limits occupational function and social interaction. An ovine model of laryngeal injury has been developed, validated and utilized to examine laryngeal wound healing and the effect of a novel collagen inhibitor (halofuginone) on surgical wound healing. The study design includes basic research and animal model. METHODS: An ovine laryngeal model was utilized to study controlled vocal fold injury and healing...
November 23, 2016: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/27876742/-on-the-problem-of-voice-rehabilitation-in-the-case-of-unilateral-vocal-fold-paresis
#7
V V Shilenkova
BACKGROUND: Unilateral vocal fold paresis (UVFP) significantly deteriorates the patient's quality of life. The leading role in the rehabilitation of the patients presenting with UVFP belongs to stimulation therapy which consists in the activation of muscle re-innervation of the larynx and the compensatory mechanisms allowing to achieve the most complete closure of the vocal folds during phonation. AIM: The objective of the present study was the optimization of the conservative treatment of patients with UVFP...
2016: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/27876301/overdrive-and-edge-as-refiners-of-belting-an-empirical-study-qualifying-and-categorizing-belting-based-on-audio-perception-laryngostroboscopic-imaging-acoustics-ltas-and-egg
#8
Julian McGlashan, Mathias Aaen Thuesen, Cathrine Sadolin
OBJECTIVES: We aimed to study the categorizations "Overdrive" and "Edge" from the pedagogical method Complete Vocal Technique as refiners of the often ill-defined concept of "belting" by means of audio perception, laryngostroboscopic imaging, acoustics, long-term average spectrum (LTAS), and electroglottography (EGG). STUDY DESIGN: This is a case-control study. METHODS: Twenty singers were recorded singing sustained vowels in a "belting" quality refined by audio perception as "Overdrive" and "Edge...
November 18, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/27876268/vocal-changes-accompanying-the-descent-of-the-larynx-during-ontogeny-from-neonates-to-adults-in-male-and-female-goitred-gazelles-gazella-subgutturosa
#9
Ilya A Volodin, Kseniya O Efremova, Roland Frey, Natalia V Soldatova, Elena V Volodina
The pronouncedly enlarged and descended larynx in male goitred gazelles (Gazella subgutturosa), Mongolian gazelles (Procapra gutturosa) and fallow deer (Dama dama) represents an interesting parallel to the 'Adam's apple' of human males. Goitred gazelles, as humans, are not born with a descended larynx. Therefore the sexual dimorphism of larynx size and position develops during ontogeny. In this study, the vocal ontogeny of male and female goitred gazelles was investigated across five age classes from neonates to adults...
September 12, 2016: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/27873325/dynamic-nanomechanical-analysis-of-the-vocal-fold-structure-in-excised-larynges
#10
Gregory R Dion, Paulo G Coelho, Stephanie Teng, Malvin N Janal, Milan R Amin, Ryan C Branski
OBJECTIVES/HYPOTHESIS: Quantification of clinical outcomes after vocal fold (VF) interventions is challenging with current technology. High-speed digital imaging and optical coherence tomography (OCT) of excised larynges assess intact laryngeal function, but do not provide critical biomechanical information. We developed a protocol to quantify tissue properties in intact, excised VFs using dynamic nanomechanical analysis (nano-DMA) to obtain precise biomechanical properties in the micrometer scale...
November 22, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27863745/a-systematic-review-of-voice-therapy-what-effectiveness-really-implies
#11
REVIEW
Maude Desjardins, Lucinda Halstead, Melissa Cooke, Heather Shaw Bonilha
INTRODUCTION: Behavioral voice therapy guided by a speech-language pathologist is recommended as the main treatment approach for many kinds of voice disorders. Encouraging evidence regard of good outcomes from voice therapy has been found in two previous reviews on broad patient populations. However, no definitive conclusion on the effectiveness of direct voice therapy can be drawn from these reviews due to limitations of the included studies. AIMS: To review recent literature on voice therapy; to provide clinicians with a list of evidence-based voice therapy techniques; to incorporate the therapy components in a physiologically based model; to assess the limitations and progress achieved in the recent research on voice therapy...
November 15, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/27861947/recurrent-laryngeal-nerve-regeneration-using-an-oriented-collagen-scaffold-containing-schwann-cells
#12
Shun-Ichi Chitose, Kiminori Sato, Mioko Fukahori, Shintaro Sueyoshi, Takashi Kurita, Hirohito Umeno
OBJECTIVES/HYPOTHESIS: Regeneration of the recurrent laryngeal nerve (RLN), which innervates the intrinsic laryngeal muscles such that they can perform complex functions, is particularly difficult to achieve. Synkinesis after RLN neogenesis leads to uncoordinated movement of laryngeal muscles. Recently, some basic research studies have used cultured Schwann cells (SCs) to repair peripheral nerve injuries. This study aimed to regenerate the RLN using an oriented collagen scaffold containing cultured SCs...
November 15, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27861929/does-treatment-of-paradoxical-vocal-fold-movement-disorder-decrease-asthma-medication-use
#13
Scott Kramer, Brad deSilva, L Arick Forrest, Laura Matrka
OBJECTIVES/HYPOTHESIS: To determine whether diagnosis and treatment of paradoxical vocal fold movement disorder (PVFMD) leads to decreased asthma medication use. Secondary objectives include determining initial rate of asthma medication use, characterizing symptom improvement, and correlating with pulmonary function testing (PFT). STUDY DESIGN: Prospective observational study. METHODS: Patients newly diagnosed with PVFMD at a single institution were recruited to participate...
November 15, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27859573/intra-and-inter-observer-reliability-estimates-for-identification-and-grading-of-upper-respiratory-tract-abnormalities-recorded-in-horses-at-rest-and-during-overground-endoscopy
#14
C L McGivney, J Sweeney, F David, J M O'Leary, E W Hill, L M Katz
BACKGROUND: Previous studies support good intra- and inter-observer agreements for endoscopic evaluation of various upper respiratory tract (URT) diseases in horses. However, these studies mainly assessed resting endoscopic examination videos and/or focussed on a single URT abnormality. OBJECTIVES: To estimate intra- and inter-observer agreement for identification and grading of all URT abnormalities from resting and overground endoscopy (OGE) videos of Thoroughbreds...
November 14, 2016: Equine Veterinary Journal
https://www.readbyqxmd.com/read/27859361/an-in-vitro-scaffold-free-epithelial-fibroblast-coculture-model-for-the-larynx
#15
Tanaya Walimbe, Alyssa Panitch, M Preeti Sivasankar
OBJECTIVES/HYPOTHESIS: Physiologically relevant, well-characterized in vitro vocal fold coculture models are needed to test the effects of various challenges and therapeutics on vocal fold physiology. We characterize a healthy state coculture model, created by using bronchial/tracheal epithelial cells and immortalized vocal fold fibroblasts. We also demonstrate that this model can be induced into a fibroplastic state to overexpress stress fibers using TGFβ1. STUDY DESIGN: In vitro...
November 16, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27836428/high-speed-imaging-of-vocal-fold-vibration-onset-delay-normal-versus-abnormal
#16
Peak Woo
OBJECTIVES: Vocal fold vibration onset delay (VFVOD) is heard frequently in spasmodic dysphonia and in muscle tension dysphonia. VFVOD changes due to other vocal pathologies have not been investigated. VFVOD during sustained vowel production was estimated with high-speed video in 10 normal and 40 pathologic subjects (scars, vocal fold paralysis, vocal fold nodules, and polyps). Analysis of high-speed video was done using digital kymography. RESULTS: VFVOD can be divided into two portions...
November 8, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/27835782/laryngospasm-central-and-obstructive-apnea-during-seizures-defining-pathophysiology-for-sudden-death-in-a-rat-model
#17
K Nakase, R Kollmar, J Lazar, H Arjomandi, K Sundaram, J Silverman, R Orman, J Weedon, D Stefanov, E Savoca, L Tordjman, K Stiles, M Ihsan, A Nunez, L Guzman, M Stewart
Seizure spread into the autonomic nervous system can result in life-threatening cardiovascular and respiratory dysfunction. Here we report on a less-studied consequence of such autonomic derangements-the possibility of laryngospasm and upper-airway occlusion. We used parenteral kainic acid to induce recurring seizures in urethane-anesthetized Sprague Dawley rats. EEG recordings and combinations of cardiopulmonary monitoring, including video laryngoscopy, were performed during multi-unit recordings of recurrent laryngeal nerve (RLN) activity or head-out plethysmography with or without endotracheal intubation...
October 27, 2016: Epilepsy Research
https://www.readbyqxmd.com/read/27830141/total-and-partial-laser-arytenoidectomy-for-bilateral-vocal-fold-paralysis
#18
REVIEW
Taner Yılmaz, Ozan Muzaffer Altuntaş, Nilda Süslü, Gamze Atay, Serdar Özer, Oğuz Kuşçu, Tevfik Sözen
Introduction. Treatment for bilateral vocal fold paralysis (BVFP) has evolved from external irreversible procedures to endolaryngeal laser surgery with greater focus on anatomic and functional preservation. Since the introduction of endolaryngeal laser arytenoidectomy, certain modifications have been described, such as partial resection procedures and mucosa sparing techniques as opposed to total arytenoidectomy. Discussion. The primary outcome measure in studies on BVFP treatment using total or partial arytenoidectomy is avoidance of tracheotomy or decannulation and reported success ranges between 90 and 100% in this regard...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27818960/vocal-fold-mobility-alteration-reversed-after-thyroidectomy
#19
Aline Paterno Miazaki, Vergilius José Furtado Araújo-Filho, Lenine Garcia Brandão, Vergilius José Furtado de Araujo-Neto, Leandro Luongo Matos, Claudio Roberto Cernea
The involvement of the inferior or recurrent laryngeal nerve (RLN) in mobility derangement of the vocal folds occurs more frequently due to thyroid malignancy invasion. Although uncommon, the same derangement, which is caused by benign thyroid entities, is also described and reverts to normality after a thyroidectomy in up to 89% of cases. In these cases, the pathogenesis of the vocal cord mobility disturbance is attributed to the direct compression of the RLN by massive thyroid enlargement. The authors describe three cases of patients presenting unilateral vocal cord palsy, which, before surgery, was diagnosed by laryngoscopy concomitantly with large and compressive goiter...
July 2016: Autopsy & case reports
https://www.readbyqxmd.com/read/27816357/evaluation-of-vocal-fold-motion-abnormalities-are-we-all-seeing-the-same-thing
#20
Lyndsay L Madden, Clark A Rosen
OBJECTIVES: Flexible laryngoscopy is the principle tool for the evaluation of vocal fold motion. As of yet, no consistent, unified outcome metric has been developed for vocal fold paralysis/immobility research. The goal of this study was to evaluate vocal fold motion assessment (inter- and intra-rater reliability) among general otolaryngologists and fellowship-trained laryngologists. STUDY DESIGN: Prospective video perceptual analysis study. METHODS: Flexible laryngoscopic examinations, with sound, of 15 unique patient cases (20 seconds each) were sent to 10 general otolaryngologists and 10 fellowship-trained laryngologists blinded to clinical history...
November 2, 2016: Journal of Voice: Official Journal of the Voice Foundation
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