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https://www.readbyqxmd.com/read/28214051/effects-of-a-straw-phonation-protocol-on-acoustic-measures-of-an-satb-chorus-singing-two-contrasting-renaissance-works
#1
Jeremy N Manternach, Chad Clark, James F Daugherty
BACKGROUND: Researchers have found that semi-occluded vocal tract (SOVT) exercises may increase vocal economy by reducing phonation threshold pressure and effort while increasing or maintaining consistent acoustic output. This research has focused solely on individual singers. Much singing instruction, however, takes place in choral settings. Choral singers may use different resonance strategies or unconsciously adjust their singing based on the ability to hear their own sound in relation to others...
February 14, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28213999/application-of-the-acoustic-voice-quality-index-for-objective-measurement-of-dysphonia-severity
#2
Faustino Núñez-Batalla, Estefanía Díaz-Fresno, Andrea Álvarez-Fernández, Gabriela Muñoz Cordero, José Luis Llorente Pendás
INTRODUCTION: Over the past several decades, many acoustic parameters have been studied as sensitive to and to measure dysphonia. However, current acoustic measures might not be sensitive measures of perceived voice quality. A meta-analysis which evaluated the relationship between perceived overall voice quality and several acoustic-phonetic correlates, identified measures that do not rely on the extraction of the fundamental period, such the measures derived from the cepstrum, and that can be used in sustained vowel as well as continuous speech samples...
February 14, 2017: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/28212947/affective-valence-of-neurons-in-the-vicinity-of-the-rat-amygdala-single-unit-activity-in-response-to-a-conditioned-behavior-and-vocal-sound-playback
#3
Hiroko Kagawa, Yoshimasa Seki, Kazuo Okanoya
We recorded single unit activity within and around the rat amygdala while rats were engaged in an operant task (which included both reward and aversive trials) and during playback of ultrasonic vocalizations (USVs) to determine if there existed neurons which responded to two different types of either positive contexts (i.e., water reward and positively associated 50kHz vocalizations) or negative contexts (i.e., white noise and negatively associated 22kHz vocalizations). Ultimately, we wanted to determine if these two contexts (operant condition task and vocal sounds) could be represented as either positive or negative in a single neuron...
February 14, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28211610/fibroid-vascularisation-assessed-with-three-dimensional-power-doppler-ultrasound-is-a-predictor-for-uterine-fibroid-growth-a-prospective-cohort-study
#4
L L Nieuwenhuis, A L Keizer, B Stoelinga, J W R Twisk, W J K Hehenkamp, H A M Brölmann, J A F Huirne
OBJECTIVE: To analyse fibroid vascularisation measured with 3D Power Doppler in relation to absolute fibroid volume change during 12 months follow up and in relation to fibroid growth rate per year DESIGN: A prospective cohort study was performed between March 2012 and March 2014. SETTING: Outpatient clinic of the VU medical centre, Amsterdam. POPULATION OR SAMPLE: All premenopausal women diagnosed with a maximum of 2 fibroids with expectative management were consecutively included...
February 17, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28209889/vocalizations-channeled-by-developmental-affordances
#5
Pamela J Hines
No abstract text is available yet for this article.
February 17, 2017: Science
https://www.readbyqxmd.com/read/28209437/the-accuracy-of-preoperative-rigid-stroboscopy-in-the-evaluation-of-voice-disorders-in-children
#6
Jobran Mansour, Ofer Amir, Doron Sagiv, Eran E Alon, Michael Wolf, Adi Primov-Fever
OBJECTIVES: Stroboscopy is considered the most appropriate tool for evaluating the function of the vocal folds but may harbor significant limitations in children. Still, direct laryngoscopy (DL), under general anesthesia, is regarded the "gold standard" for establishing a diagnosis of vocal fold pathology. The aim of the study is to examine the accuracy of preoperative rigid stroboscopy in children with voice disorders. STUDY DESIGN: This is a retrospective study...
February 13, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28208891/outcomes-of-capsular-dissection-technique-with-use-of-bipolar-electrocautery-in-total-thyroidectomy-a-rural-tertiary-center-experience
#7
Amal T Das, S B Prakash, V Priyadarshini
INTRODUCTION: Total thyroidectomy is one of the most routinely performed head and neck surgical procedures with extremely low mortality. This procedure has been associated with two major complications such as recurrent laryngeal nerve injury and hypocalcaemia due to parathyroid insufficiency. The use of bipolar electrocautery has not been widely accepted in view of thermal damage to adjacent structures. AIM: To study the outcomes and complications of capsular dissection technique along with use of bipolar electrocautery in total thyroidectomy...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208177/feasibility-and-associated-limitations-of-office-based-laryngeal-surgery-using-carbon-dioxide-lasers
#8
Hao-Chun Hu, Shu-Yi Lin, Yi-Ting Hung, Shyue-Yih Chang
Importance: There are few reports evaluating awake, office-based carbon dioxide (CO2) laser surgery for laryngeal lesions. To date, this study was the largest reported case series of office-based laryngeal surgery by fiber delivery CO2 laser. Office-based laryngeal surgical procedures have become increasingly popular. Technical problems and treatment outcomes associated with the use of a CO2 laser for office-based laryngeal surgery have yet to be fully addressed. Objectives: To discuss a single institution's clinical experience with office-based CO2 laser laryngeal surgery and the feasibility and limitations associated with this procedure...
February 16, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28207579/expansion-of-prosodic-abilities-at-the-transition-from-babble-to-words-a-comparison-between-children-with-cochlear-implants-and-normally-hearing-children
#9
Michèle Pettinato, Ilke De Clerck, Jo Verhoeven, Steven Gillis
OBJECTIVES: This longitudinal study examined the effect of emerging vocabulary production on the ability to produce the phonetic cues to prosodic prominence in babbled and lexical disyllables of infants with cochlear implants (CI) and normally hearing (NH) infants. Current research on typical language acquisition emphasizes the importance of vocabulary development for phonological and phonetic acquisition. Children with CI experience significant difficulties with the perception and production of prosody, and the role of possible top-down effects is, therefore, particularly relevant for this population...
February 15, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28207550/retrospective-analysis-of-vocal-cord-to-suprasternal-notch-distance-implications-for-preventing-endotracheal-tube-cuff-induced-vocal-cord-injury
#10
Hyerim Kim, Jee-Eun Chang, Jung-Hee Ryu, Haesun Jung, Seong-Won Min, Jung-Man Lee, Jin-Young Hwang
Endotracheal tube (ETT) positioning using the cuff ballottement test, which confirms that the inflated cuff is positioned at the suprasternal notch with squeezing or inflating a pilot balloon, has been reported to be a simple and reliable method of preventing endobronchial intubation. However, in patients with a short vocal cord-to-suprasternal notch, ETT placement using the cuff ballottement test can cause vocal cord injury. In the present study, we assessed the distance from a point 15 mm below the vocal cord to the suprasternal notch (VSD-15), the safe position for ETT cuff placement above the suprasternal notch, and investigated variables for predicting VSD-15...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28207283/modeling-information-content-via-dirichlet-multinomial-regression-analysis
#11
Alberto Ferrari
Shannon entropy is being increasingly used in biomedical research as an index of complexity and information content in sequences of symbols, e.g. languages, amino acid sequences, DNA methylation patterns and animal vocalizations. Yet, distributional properties of information entropy as a random variable have seldom been the object of study, leading to researchers mainly using linear models or simulation-based analytical approach to assess differences in information content, when entropy is measured repeatedly in different experimental conditions...
February 16, 2017: Multivariate Behavioral Research
https://www.readbyqxmd.com/read/28204507/foxp1-expression-is-essential-for-sex-specific-murine-neonatal-ultrasonic-vocalization
#12
Henning Fröhlich, Rafiullah Rafiullah, Nathalie Schmitt, Sonja Abele, Gudrun A Rappold
No abstract text is available yet for this article.
February 15, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28203464/unilateral-laryngeal-pacing-system-and-its-functional-evaluation
#13
Taiping Zeng, Zhiping Zhang, Weiwei Peng, Fei Zhang, Baker Y Shi, Fangyi Chen
Goal. To establish a reliable instrumental system for synchronized reactivation of a unilaterally paralyzed vocal fold and evaluate its functional feasibility. Methods. Unilateral vocal fold paralysis model was induced by destruction of the left recurrent laryngeal nerve (RLN) in anesthetized dogs. With a micro controller-based electronic system, electromyography (EMG) signals from cricothyroid (CT) muscle on the ipsilateral side were recorded and used to trigger pacing of paralyzed vocalis muscles. The dynamic movement of vocal folds was continuously monitored using an endoscope, and the opening and closing of the glottis were quantified with customized imaging processing software...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28203263/perception-of-emotional-valence-in-horse-whinnies
#14
Elodie F Briefer, Roi Mandel, Anne-Laure Maigrot, Sabrina Briefer Freymond, Iris Bachmann, Edna Hillmann
BACKGROUND: Non-human animals often produce different types of vocalisations in negative and positive contexts (i.e. different valence), similar to humans, in which crying is associated with negative emotions and laughter is associated with positive ones. However, some types of vocalisations (e.g. contact calls, human speech) can be produced in both negative and positive contexts, and changes in valence are only accompanied by slight structural differences. Although such acoustically graded signals associated with opposite valence have been highlighted in some species, it is not known if conspecifics discriminate them, and if contagion of emotional valence occurs as a result...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28199505/influence-of-left-right-asymmetries-on-voice-quality-in-simulated-paramedian-vocal-fold-paralysis
#15
Robin A Samlan, Brad H Story
Purpose: The purpose of this study was to determine the vocal fold structural and vibratory symmetries that are important to vocal function and voice quality in a simulated paramedian vocal fold paralysis. Method: A computational kinematic speech production model was used to simulate an exemplar "voice" on the basis of asymmetric settings of parameters controlling glottal configuration. These parameters were then altered individually to determine their effect on maximum flow declination rate, spectral slope, cepstral peak prominence, harmonics-to-noise ratio, and perceived voice quality...
February 1, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28199318/acoustic-correlates-of-body-size-and-individual-identity-in-banded-penguins
#16
Livio Favaro, Marco Gamba, Claudia Gili, Daniela Pessani
Animal vocalisations play a role in individual recognition and mate choice. In nesting penguins, acoustic variation in vocalisations originates from distinctiveness in the morphology of the vocal apparatus. Using the source-filter theory approach, we investigated vocal individuality cues and correlates of body size and mass in the ecstatic display songs the Humboldt and Magellanic penguins. We demonstrate that both fundamental frequency (f0) and formants (F1-F4) are essential vocal features to discriminate among individuals...
2017: PloS One
https://www.readbyqxmd.com/read/28197554/does-size-really-matter-the-role-of-tonotopic-map-area-dynamics-for-sound-learning-in-mouse-auditory-cortex
#17
Hans Sperup Brünner, Rune Rasmussen
This commentary centers on the novel findings by Shepard et al. (2016) published in eNeuro. The authors interrogated tonotopic map dynamics in auditory cortex (ACtx) by employing a natural sound-learning paradigm, where mothers learn the importance of pup ultrasonic vocalizations (USVs), allowing Shepard et al. to probe the role of map area expansion for auditory learning. They demonstrate that auditory learning in this paradigm does not rely on map expansion but is facilitated by increased inhibition of neurons tuned to low-frequency sounds...
January 2017: ENeuro
https://www.readbyqxmd.com/read/28196398/factors-of-influence-and-social-correlates-of-parturition-in-captive-campbell-s-monkeys-case-study-and-breeding-data
#18
Alban Lemasson, Ronan Jubin, Philippe Bec, Martine Hausberger
How nonhuman primates deal with birth, at the moment of delivery, and during the following days, remains poorly explored because of the unpredictability of this event, particularly for forest-dwelling arboreal species. Available studies highlight intra- and interspecific variation which suggest flexibility of the timing of delivery, of behavior associated with labor contractions and parturition, and the social context and ambient noise surrounding delivery. Here, we present the findings of a two-decade survey of reproduction in a population of captive Campbell's monkeys...
February 14, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28196377/speaking-tongues-are-actively-braced
#19
Bryan Gick, Blake Allen, François Roewer-Després, Ian Stavness
Purpose: Bracing of the tongue against opposing vocal-tract surfaces such as the teeth or palate has long been discussed in the context of biomechanical, somatosensory, and aeroacoustic aspects of tongue movement. However, previous studies have tended to describe bracing only in terms of contact (rather than mechanical support), and only in limited phonetic contexts, supporting a widespread view of bracing as an occasional state, peculiar to specific sounds or sound combinations. Method: The present study tests the pervasiveness and effortfulness of tongue bracing in continuous English speech passages using electropalatography and 3-D biomechanical simulations...
February 14, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28195525/observing-others-speak-or-sing-activates-spt-and-neighboring-parietal-cortex
#20
Daniele Corbo, Guy A Orban
To obtain further evidence that action observation can serve as a proxy for action execution and planning in posterior parietal cortex, we scanned participants while they were (1) observing two classes of action: vocal communication and oral manipulation, which share the same effector but differ in nature, and (2) rehearsing and listening to nonsense sentences to localize area Spt, thought to be involved in audio-motor transformation during speech. Using this localizer, we found that Spt is specifically activated by vocal communication, indicating that Spt is not only involved in planning speech but also in observing vocal communication actions...
February 14, 2017: Journal of Cognitive Neuroscience
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