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PubMed Journals Articles About "Sahamalaza Sportive Lemur Lepilemur Sahamalaza Vocal Communication Call" RSS

22:39 EST 17th February 2020 | BioPortfolio

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Showing "Sahamalaza Sportive Lemur Lepilemur sahamalaza Vocal Communication Call" PubMed Articles 1–25 of 1,000+

Sahamalaza Sportive Lemur, Lepilemur sahamalaza, Vocal Communication: Call Use, Context and Gradation.

Stereotypical vocalisations can facilitate long-distance communication in dense and, thus, sound-degrading forest habitats. Despite this, primate vocal repertoires often also include gradations between different call types that are used in social interactions. Because many nocturnal primates show a solitary social structure, it has been difficult to assess the role vocalisations play in mediating their social encounters. Here we aim to expand on the call types of Sahamalaza sportive lemurs, Lepilemur sahama...


The role of auditory feedback on vocal pattern generation in marmoset monkeys.

Marmoset monkeys are known for their rich vocal repertoire. However, the underlying call production mechanisms remain unclear. By showing that marmoset moneys are capable of interrupting and modulating ongoing vocalizations, recent studies in marmoset monkeys challenged the decades-old concepts of primate vocal pattern generation that suggested that monkey calls consist of one discrete call pattern. The current article will present a revised version of the brainstem vocal pattern-generating network in marmo...

A Modular Approach to Vocal Learning: Disentangling the Diversity of a Complex Behavioral Trait.

Vocal learning is a behavioral trait in which the social and acoustic environment shapes the vocal repertoire of individuals. Over the past century, the study of vocal learning has progressed at the intersection of ecology, physiology, neuroscience, molecular biology, genomics, and evolution. Yet, despite the complexity of this trait, vocal learning is frequently described as a binary trait, with species being classified as either vocal learners or vocal non-learners. As a result, studies have largely focus...


Identification of Paradoxical Vocal Fold Movement with Diagnostic Ultrasound: Confirmation with Video Laryngoscopy.

A well-recognized cause of dyspnea in athletes is vocal cord dysfunction (VCD). VCD is characterized by paradoxical vocal fold movement (PVFM) in which the vocal folds adduct (close) during inspiration. Symptoms of VCD include wheezing, stridor, dyspnea, and exercise intolerance. This article is protected by copyright. All rights reserved.

The role of deep breaths in ultrasonic vocal production of Sprague Dawley rats.

Deep breaths are one of three breathing patterns in rodents characterized by an increased tidal volume. While humans incorporate deep breaths into vocal behavior, it was unknown whether nonhuman mammals use deep breaths for vocal production. We have utilized subglottal pressure recordings in awake, spontaneously behaving male Sprague Dawley rats in five contexts: sleep, rest, noxious stimulation, exposure to a female in estrus, and exposure to an unknown male. Deep breaths were produced at rates ranging bet...

Vocal Repertoire and Intraspecific Variation within Two Loud Calls of the Small-Eared Greater Galago (Otolemur garnettii) in Tanzania and Kenya.

Vocal repertoires and call structure can provide insights into the behaviour and evolution of species, as well as aid in taxonomic classification. Nocturnal primates have large vocal repertoires. This suggests that acoustic communication plays an important role in their life histories. Little is known about the behavioural context or the intraspecific variation of their vocalisations. We used autonomous recording units and manual recorders to investigate the vocal behaviour and structure of loud calls of th...

Prelinguistic Vocal Development in Children With Cochlear Implants: A Systematic Review.

This systematic review is designed to (a) describe measures used to quantify vocal development in pediatric cochlear implant (CI) users, (b) synthesize the evidence on prelinguistic vocal development in young children before and after cochlear implantation, and (c) analyze the application of the current evidence for evaluating change in vocal development before and after cochlear implantation for young children. Investigations of prelinguistic vocal development after cochlear implantation are only beginning...

Vocal cord function during recurrent laryngeal nerve injury assessed by accelerometry and EMG.

Gradual impairment of nerve conduction is expected to be tightly associated with simultaneous gradual loss of vocal cord contractility, related to the fact that injured axons are connected to a defined number of muscle cells. In clinical studies, there is a time gap between observed adverse electromyographic (EMG) changes and examination of vocal cord function. This study evaluates the impact of intraoperative EMG changes on synchronous vocal cord contractility by simultaneous use of continuous intraoperati...

Mockingbirds imitate frogs and toads across North America.

Vocal mimicry is taxonomically widespread among birds, but little is known about mimicry of non-avian models. Prior studies show preferential imitation of avian models whose sounds are acoustically similar to the non-imitative songs of the vocal mimic. Based on these studies and anecdotes about frog imitations by northern mockingbirds (Mimus polyglottos), we hypothesized which anuran models would be most likely to get imitated by mockingbirds across their geographic range. We tested our hypothesis using >40...

Autologous fibroblasts for vocal scars and age-related atrophy: A randomized clinical trial.

To assess the safety and efficacy of autologous cultured fibroblasts (ACFs) to treat dysphonia related to vocal fold scar and age-related vocal atrophy (ARVA).

Laryngeal Microsurgery for the Treatment of Vocal Nodules and Cysts in Dysphonic Children.

Vocal nodules and cysts are frequent causes of infantile dysphonia. Vocal therapy is the first treatment. Microsurgery has restricted indications, especially for nodules.

Different Vibratory Conditions Elicit Different Structural and Biological Vocal Fold Changes in an In-Vivo Rabbit Model of Phonation.

Vibration of the vocal folds can disrupt the tissue and induce structural, functional, and molecular changes; the presence or absence of contact between the vocal folds during vibration can affect the type and extent of these changes. The purpose of this study was to characterize vocal fold changes following 2 hours of contact phonation or phonation without vibratory contact.

Vocal cords myxoma misdiagnosed as vocal cord polyp:a case report.

Cross-cultural adaptation and psychometric assessment of a Persian version of Proctor's developmental vocal assessment protocol: Description of Persian infant vocal development.

With increasing recognition of the importance of pre-linguistic vocalization, and early intervention for children, proper protocols play an important role in documenting infants' progress and effects of early interventional programs. This study aimed to translate Proctor's Developmental Vocal Assessment Protocol into Persian, make cultural adaptations, assess Persian version of Developmental Vocal Assessment Protocol (P-DVAP)'s validity, internal consistency, and reliability, and provide a general perspecti...

Self-Assessment of Vocal Fatigue in Muscle Tension Dysphonia and Vocal Nodules: A Preliminary Analysis of the Discriminatory Potential of the Croatian Adaptation of the Vocal Fatigue Index (VFI-C).

In this paper the authors hypothesize that the intensity of subjective experience of vocal fatigue (VF) potentially reflects primary (hyper) functional vocal disorders (primary muscle tension dysphonia - MTD) differently than structural vocal disorders of functional etiology (MTD type 2a). Given the reported benefit of self-evaluation in the quantification of VF, the goal of this study was to test the potential of the Croatian adaptation of the Vocal Fatigue Index questionnaire (VFI-C) in order to show diff...

Lemurs in Cacao: Presence and Abundance within the Shade Plantations of Northern Madagascar.

The recognition that much biodiversity exists outside protected areas is driving research to understand how animals survive in anthropogenic landscapes. In Madagascar, cacao (Theobroma cacao) is grown under a mix of native and exotic shade trees, and this study sought to understand whether lemurs were present in these agroecosystems. Between November 2016 and March 2017, discussions with farmers, nocturnal reconnaissance surveys and camera traps were used to confirm the presence of lemurs in the Cokafa and ...

Constriction canal assisted artificial lateral line system for enhanced hydrodynamic pressure sensing.

With the assistance of mechanosensory lateral line system, fish can perceive minute water motions in complex underwater environments. Inspired by the constriction within canal nearby canal neuromast in fish lateral line system, we proposed a novel canal artificial lateral line (CALL) device with constriction in canal nearby the sensing element. The designed CALL device consisted of poly(vinylidene fluoride-trifluoroethylene)/polyimide cantilever as sensing element and polydimethylsiloxane (PDMS) microfluid ...

Effects of transcutaneous electrical nervous stimulation (TENS) associated with vocal therapy on musculoskeletal pain of women with behavioral dysphonia: A randomized, placebo-controlled double-blind clinical trial.

Recently, electrical stimulation in vocal rehabilitation has been the subject of studies. This treatment has shown promising results regarding the decrease of vocal/laryngeal symptoms, pain and the improvement of vocal tension. In addition to decreasing pain symptoms, TENS treatments may lead to muscle relaxation. There is no data on the effects of this resource as a vocal therapy in women with behavioral dysphonia. Research in this area may provide evidence to assist the clinical decision related to the tr...

Three-dimensional vocal fold structural change due to implant insertion in medialization laryngoplasty.

Glottal insufficiency due to vocal fold paralysis, paresis, or atrophy often leads to degraded voice quality. One of the primary surgical intervention procedures to treat glottal insufficiency is medialization laryngoplasty, in which an implant is inserted through a lateral window on the thyroid cartilage to medialize the vocal folds. While the goal of medialization is to modify the vocal fold structure to restore normal phonation, few studies have attempted to quantify such structural changes of the vocal ...

Communication Under Pressure: A Quasi-Experimental Study to Assess the Impact of a Structured Curriculum on Skilled Communication to Promote a Healthy Work Environment.

Therapeutic Efficacy of Basic Fibroblast Growth Factor in Patients With Vocal Fold Atrophy.

In recent years, basic fibroblast growth factor (bFGF) injection has been used in the treatment of aging-related vocal fold atrophy. This injection not only improves closure by increasing the mass of the vocal fold but also improves its viscoelasticity. However, it has been reported that fibroblasts targeted by bFGF treatment decrease in number with age. The purpose of this study was to examine the effects of local injection of bFGF on age-related vocal atrophy as well as the influence of age on phonologica...

Vocal and locomotor coordination develops in association with arousal state.

In adult animals, movement and vocalizations are coordinated, sometimes facilitating, and at other times inhibiting, each other. What is missing is how these different domains of motor control become coordinated over the course of development. We investigated how postural-locomotor behaviors may influence vocal development, and the role played by physiological arousal during their interactions. Using infant marmoset monkeys, we densely sampled vocal, postural and locomotor behaviors and estimated arousal fl...

Variation in accessibility of the population to an Emergency Medical Communication Centre: a multicentre observational study.

Access to an Emergency Medical Communication Centre is essential for the population in emergency situations. Handling inbound calls without delay requires managing activity, process and outcome measures of the Emergency Medical Communication Centre to improve the workforce management and the level of service. France is facing political decisions on the evolution of the organisation of Emergency Medical Communication Centres to improve accessibility for the population. First, we aim to describe the variation...

The progress of narrow band imaging endoscopy in diagnosis of vocal cord leukoplakia.

The appearances of vocal cord leukoplakia are largely identical in the macroscopic examination even though the pathological character may differ. This makes it difficult for physicians to evaluate the extent of dysplasia of vocal cord leukoplakia and detect the occurrence of canceration using the conventional laryngoscopy, which might result in overtreatment or undertreatment of vocal cord leukoplakia in different patients. Therefore, an accurate preoperative assessment of the pathological character of voca...

Aerodynamically driven phonation of individual vocal folds under general anesthesia in canines.

We previously developed an instrument called the Aerodynamic Vocal Fold Driver (AVFD) for intraoperative magnified assessment of vocal fold (VF) vibration during microlaryngoscopy under general anesthesia. Excised larynx testing showed that the AVFD could provide useful information about the vibratory characteristics of each VF independently. The present investigation expands those findings by testing new iterations of the AVFD during microlaryngoscopy in the canine model.


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