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https://www.readbyqxmd.com/read/29120706/administration-of-cloprostenol-and-oxytocin-before-electroejaculation-in-goat-bucks-reduces-the-needed-amount-of-electrical-stimulation-without-affecting-seminal-quality
#1
Rodolfo Ungerfeld, Daniela Casuriaga, Julia Giriboni, Aline Freitas-de-Melo, Patricia Silveira, Felipe Zandonadi Brandão
Electroejaculation (EE) is a widely used semen collection technique; but, it is stressful and painful for the animals. Considering these concerns, it may be important to develop practices to decrease the negative implications of EE on animals. Oxytocin and prostaglandin-F2alpha (PGF2α) stimulate the contractions of the muscles of the male genital tract. Therefore, the aim of this study was to analyze the effectiveness of the administration of oxytocin and/or a PGF2α analogue (cloprostenol) to bucks in relation to their stress response and sperm parameters before semen collection by EE was performed...
October 28, 2017: Theriogenology
https://www.readbyqxmd.com/read/29111338/cross-cultural-adaptation-and-validation-of-the-italian-version-of-the-vocal-tract-discomfort-scale-i-vtd
#2
Carlo Robotti, Francesco Mozzanica, Ilaria Pozzali, Laura D'Amore, Patrizia Maruzzi, Daniela Ginocchio, Stafania Barozzi, Rosaria Lorusso, Francesco Ottaviani, Antonio Schindler
OBJECTIVE: To evaluate the reliability and validity of the Italian version of the VTD scale (I-VTD scale). STUDY DESIGN: Cross-sectional, nonrandomized, prospective study with controls. METHODS: For the item generation, a cross-cultural adaptation and translation process was performed following the back translation process (phase 1). For reproducibility analysis (phase 2), 102 patients with dysphonia were recruited (internal consistency analysis); 57 of them completed the I-VTD scale twice (test-retest reliability analysis)...
October 27, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/29111337/the-vocal-tract-organ-a-new-musical-instrument-using-3-d-printed-vocal-tracts
#3
David M Howard
The advent and now increasingly widespread availability of 3-D printers is transforming our understanding of the natural world by enabling observations to be made in a tangible manner. This paper describes the use of 3-D printed models of the vocal tract for different vowels that are used to create an acoustic output when stimulated with an appropriate sound source in a new musical instrument: the Vocal Tract Organ. The shape of each printed vocal tract is recovered from magnetic resonance imaging. It sits atop a loudspeaker to which is provided an acoustic L-F model larynx input signal that is controlled by the notes played on a musical instrument digital interface device such as a keyboard...
October 27, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/29068595/computational-fluid-dynamics-in-the-assessment-of-patients-postoperative-status-after-glottis-widening-surgery
#4
Magdalena Marków, Daniel Janecki, Bogusława Orecka, Maciej Misiołek, Krzysztof Warmuziński
BACKGROUND: Computational fluid dynamics (CFD), a rapidly developing instrument with a number of practical applications, allows calculation and visualization of the changing parameters of airflow in the upper respiratory tract. OBJECTIVES: The aim of this study was to demonstrate the advantages of CFD as an instrument for noninvasive tests of the larynx in patients who had undergone surgical treatment due to bilateral vocal fold paralysis. MATERIAL AND METHODS: Surface measurements of the glottic space were made during maximum adduction of the vocal folds...
September 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29031288/case-report-old-world-mucosal-leishmaniasis-report-of-five-imported-cases-to-the-hospital-for-tropical-diseases-london-united-kingdom
#5
Trupti A Patel, Glenis K Scadding, David E Phillips, Diana N Lockwood
Old World species of Leishmania typically cause visceral and cutaneous leishmaniasis. Mucosal involvement is typically seen with infection by Leishmania species found in South America, usually after the healing of cutaneous leishmaniasis. We present five imported cases of mucosal leishmaniasis caused by Old World Mediterranean Leishmania infantum exclusively affecting the nasal mucosa or vocal cord. In only one case was there a recollection of a preceding cutaneous lesion compatible with cutaneous Leishmaniasis...
October 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28986153/contemporary-commercial-music-singing-students-voice-quality-and-vocal-function-at-the-beginning-of-singing-training
#6
Ewelina M Sielska-Badurek, Maria Sobol, Katarzyna Olszowska, Kazimierz Niemczyk
OBJECTIVE: The purpose of this study was to assess the voice quality and the vocal tract function in popular singing students at the beginning of their singing training at the High School of Music. DESIGN: This is a retrospective cross-sectional study. METHODS: The study consisted of 45 popular singing students (35 females and 10 males, mean age: 19.9 ± 2.8 years). They were assessed in the first 2 months of their 4-year singing training at the High School of Music, between 2013 and 2016...
October 3, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28966914/laryngeal-paracoccidioidomycosis-presenting-as-solitary-true-vocal-fold-disease
#7
Walter de Araujo Eyer-Silva, Annelise Callmann Santana, Guilherme Almeida Rosa da Silva, Marcelo Costa Velho Mendes de Azevedo, Juliana Li Ting Matos Sun Barreto, Marina Apolloni Neumann, Izana Junqueira de Castro, Rodrigo Panno Basílio-de-Oliveira, Luciana Ferreira de Araujo, Nathane Zanineli Ré, Felipe Marques de Oliveira, Caio José de Araujo Simas, Marcos André de Sarvat, Fernando Raphael de Almeida Ferry
Paracoccidioidomycosis (PCM) is a systemic granulomatous disease caused by Paracoccidioides brasiliensis or P. lutzii. It is a neglected tropical infectious disease that poses a major public health burden in endemic areas of Latin America. Mucosae of the upper digestive and respiratory tracts are commonly involved and many patients have disease at multiple mucosal sites, with or without lung involvement. Mucosal PCM presenting as solitary true vocal fold disease is relatively rare. We present the case of a 67-year-old Brazilian forest guard who presented with a 6-month history of hoarseness and globus pharyngeus due to a solitary left true vocal fold infiltration and vegetation diagnosed as PCM...
2017: IDCases
https://www.readbyqxmd.com/read/28964087/acoustic-impact-of-the-gradual-glottal-abduction-degree-on-the-production-of-fricatives-a-numerical-study
#8
Benjamin Elie, Yves Laprie
The paper presents a numerical study about the acoustic impact of the gradual glottal opening on the production of fricatives. Sustained fricatives are simulated by using classic lumped circuit element methods to compute the propagation of the acoustic wave along the vocal tract. A recent glottis model is connected to the wave solver to simulate a partial abduction of the vocal folds during their self-oscillating cycles. Area functions of fricatives at the three places of articulation of French have been extracted from static MRI acquisitions...
September 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28943715/methods-for-eliciting-annotating-and-analyzing-databases-for-child-speech-development
#9
Mary E Beckman, Andrew R Plummer, Benjamin Munson, Patrick F Reidy
Methods from automatic speech recognition (ASR), such as segmentation and forced alignment, have facilitated the rapid annotation and analysis of very large adult speech databases and databases of caregiver-infant interaction, enabling advances in speech science that were unimaginable just a few decades ago. This paper centers on two main problems that must be addressed in order to have analogous resources for developing and exploiting databases of young children's speech. The first problem is to understand and appreciate the differences between adult and child speech that cause ASR models developed for adult speech to fail when applied to child speech...
September 2017: Computer Speech & Language
https://www.readbyqxmd.com/read/28925286/vocal-function-exercises-for-normal-voice-the-effects-of-varying-dosage
#10
Maria Bane, Vrushali Angadi, Emily Dressler, Richard Andreatta, Joseph Stemple
PURPOSE: This study examined the effect of varying dosage of vocal function exercise (VFE) home practice on attainment of pre-established maximum phonation time (MPT) goals in individuals with normal voice. High dosage VFE practice was expected to result in greatest MPT. The overarching goal of this study was to contribute to a VFE dosage-response curve, potentially including a point of observable toxicity. METHOD: Twenty-eight females ages 18-25 with normal voice participated in this pre-post longitudinal group study...
September 19, 2017: International Journal of Speech-language Pathology
https://www.readbyqxmd.com/read/28902229/correlation-between-vocal-tract-symptoms-and-modern-singing-handicap-index-in-church-gospel-singers
#11
Joel Pinheiro, Kelly Cristina Alves Silverio, Larissa Thaís Donalonso Siqueira, Janine Santos Ramos, Alcione Ghedini Brasolotto, Fabiana Zambon, Mara Behlau
Objective: To verify the correlation between vocal tract discomfort symptoms and perceived voice handicaps in gospel singers, analyzing possible differences according to gender. Methods: 100 gospel singers volunteered, 50 male and 50 female. All participants answered two questionnaires: Vocal Tract Discomfort (VTD) scale and the Modern Singing Handicap Index (MSHI) that investigates the vocal handicap perceived by singers, linking the results of both instruments (p<0...
August 24, 2017: CoDAS
https://www.readbyqxmd.com/read/28898358/relevance-of-the-implementation-of-teeth-in-three-dimensional-vocal-tract-models
#12
Louisa Traser, Peter Birkholz, Tabea Viktoria Flügge, Robert Kamberger, Michael Burdumy, Bernhard Richter, Jan Gerrit Korvink, Matthias Echternach
Purpose: Recently, efforts have been made to investigate the vocal tract using magnetic resonance imaging (MRI). Due to technical limitations, teeth were omitted in many previous studies on vocal tract acoustics. However, the knowledge of how teeth influence vocal tract acoustics might be important in order to estimate the necessity of implementing teeth in vocal tract models. The aim of this study was therefore to estimate the effect of teeth on vocal tract acoustics. Method: The acoustic properties of 18 solid (3-dimensional printed) vocal tract models without teeth were compared to the same 18 models including teeth in terms of resonance frequencies (fRn)...
September 18, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28886973/vocal-tract-morphology-in-inhaling-singing-characteristics-during-vowel-production-a-case-study-in-a-professional-singer
#13
Mieke Moerman, Françoise Vanhecke, Lieven Van Assche, Johan Vercruysse
BACKGROUND: A professional singer produced various vowels on a comfortable loudness and pitch in an inspiratory and expiratory phonation manner. The present study investigates the morphological differences and tries to find a link with the acoustical characteristics. OBJECTIVES/HYPOTHESIS: We hypothesize that features, constantly present over all vowels, characterize inhaling phonation and that the formant frequencies reflect the morphological findings. STUDY DESIGN: A prospective case study was carried out...
September 5, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28878980/the-origins-of-babytalk-smiling-teaching-or-social-convergence
#14
Marina Kalashnikova, Christopher Carignan, Denis Burnham
When addressing their young infants, parents systematically modify their speech. Such infant-directed speech (IDS) contains exaggerated vowel formants, which have been proposed to foster language development via articulation of more distinct speech sounds. Here, this assumption is rigorously tested using both acoustic and, for the first time, fine-grained articulatory measures. Mothers were recorded speaking to their infant and to another adult, and measures were taken of their acoustic vowel space, their tongue and lip movements and the length of their vocal tract...
August 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28863607/effect-of-level-difference-between-left-and-right-vocal-folds-on-phonation-physical-experiment-and-theoretical-study
#15
Isao T Tokuda, Ryo Shimamura
As an alternative factor to produce asymmetry between left and right vocal folds, the present study focuses on level difference, which is defined as the distance between the upper surfaces of the bilateral vocal folds in the inferior-superior direction. Physical models of the vocal folds were utilized to study the effect of the level difference on the phonation threshold pressure. A vocal tract model was also attached to the vocal fold model. For two types of different models, experiments revealed that the phonation threshold pressure tended to increase as the level difference was extended...
August 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28863564/a-one-dimensional-search-method-with-stable-1-norm-solution-for-linear-prediction
#16
M K Jayesh, C S Ramalingam
In this paper a simple iterative algorithm that is guaranteed to produce a stable all-pole filter when minimizing the 1-norm of the linear prediction error signal is proposed. The approach works for both the autocorrelation and covariance frameworks, involves only a one-dimensional search at each step, and obviates the need for linear programming based methods. Based on simulation studies, it was observed that the performance of the algorithm is nearly optimal, i.e., very close to the estimates obtained using interior point methods...
August 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28852841/association-of-breathing-sound-spectra-with-glottal-dimensions-in-exercise-induced-vocal-cord-dysfunction
#17
Ahmed Geneid, L-M Aaltonen, L Porra, J Peltonen, K Palmu, A Sovijärvi, P Piirilä
The objective of this study was to evaluate associations between the breathing sound spectra and glottal dimensions in exercise-induced vocal cord dysfunction (EIVCD) during a bicycle ergometry test. Nineteen subjects (mean age 21.8 years and range 13-39 years) with suspected EIVCD were studied. Vocal folds were continuously imaged with videolaryngoscopy and breathing sounds were recorded during the bicycle exercise test. Twelve subjects showed paradoxical movement of the vocal folds during inspiration by the end of the exercise...
November 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28841483/major-depressive-disorder-discrimination-using-vocal-acoustic-features
#18
Takaya Taguchi, Hirokazu Tachikawa, Kiyotaka Nemoto, Masayuki Suzuki, Toru Nagano, Ryuki Tachibana, Masafumi Nishimura, Tetsuaki Arai
BACKGROUND: The voice carries various information produced by vibrations of the vocal cords and the vocal tract. Though many studies have reported a relationship between vocal acoustic features and depression, including mel-frequency cepstrum coefficients (MFCCs) which applied to speech recognition, there have been few studies in which acoustic features allowed discrimination of patients with depressive disorder. Vocal acoustic features as biomarker of depression could make differential diagnosis of patients with depressive state...
January 1, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28839006/the-physiology-of-oral-whistling-a-combined-radiographic-and-mri-analysis
#19
Alba Miranda Azola, Jeffrey Palmer, Rachel Mulheren, Riccardo Hofer, Florian Fischmeister, W Tecumseh Fitch
The fluid mechanics of whistling involve the instability of an air jet, resultant vortex rings, and the interaction of these rings with rigid boundaries (2,4). Experimental models support the hypothesis that the sound in human whistling is generated by a Helmholtz resonator, suggesting that the oral cavity acts as a resonant chamber bounded by two orifices, posteriorly by raising the tongue to the hard palate, and anteriorly by pursed lips 2,2,3). However, the detailed anatomical changes in the vocal tract and their relation to the frequencies generated have not been described in the literature...
August 24, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28837727/short-term-effect-of-two-semi-occluded-vocal-tract-training-programs-on-the-vocal-quality-of-future-occupational-voice-users-resonant-voice-training-using-nasal-consonants-versus-straw-phonation
#20
Iris Meerschman, Kristiane Van Lierde, Karen Peeters, Eline Meersman, Sofie Claeys, Evelien D'haeseleer
Purpose: The purpose of this study was to determine the short-term effect of 2 semi-occluded vocal tract training programs, "resonant voice training using nasal consonants" versus "straw phonation," on the vocal quality of vocally healthy future occupational voice users. Method: A multigroup pretest-posttest randomized control group design was used. Thirty healthy speech-language pathology students with a mean age of 19 years (range: 17-22 years) were randomly assigned into a resonant voice training group (practicing resonant exercises across 6 weeks, n = 10), a straw phonation group (practicing straw phonation across 6 weeks, n = 10), or a control group (receiving no voice training, n = 10)...
September 18, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
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