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1.
Eur Arch Otorhinolaryngol ; 281(9): 4873-4880, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38709324

RESUMO

OBJECTIVES: There has been the assumption that whispering may impact vocal function, leading to the widespread recommendation against its practice after phonosurgery. However, the extent to which whispering affects vocal function and vocal fold oscillation patterns remains unclear. METHODS: 10 vocally healthy subjects (5 male, 5 female) were instructed to forcefully whisper a standardized text for 10 min at a sound level of 70 dB(A), measured at a microphone distance of 30 cm to the mouth. Prior to and following the whisper loading, the dysphonia severity index was assessed. Simultaneously, recordings of high speed videolaryngoscopy (HSV), electroglottography, and audio signals during sustained phonation on the vowel /i/ (250 Hz for females and 125 Hz for males) were analyzed after segmentation of the HSV material. RESULTS: The pre-post analysis revealed only minor changes after the intervention. These changes included a rise in minimum intensity, an increase in the glottal area waveform-derived open quotient, and the glottal gap index. However, no statistically significant changes were observed in the harmonic-to-noise-ratio, the glottal- to-noise-excitation-ratio, and the electroglottographic open quotient. CONCLUSION: Overall, the study suggests that there are only small effects on vocal function in consequence of a forced whisper loading.


Assuntos
Laringoscopia , Fonação , Qualidade da Voz , Humanos , Masculino , Feminino , Adulto , Qualidade da Voz/fisiologia , Fonação/fisiologia , Prega Vocal/fisiopatologia , Adulto Jovem , Disfonia/fisiopatologia , Voluntários Saudáveis , Gravação em Vídeo
2.
J Acoust Soc Am ; 156(2): 939-953, 2024 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-39133633

RESUMO

Many voice disorders are linked to imbalanced muscle activity and known to exhibit asymmetric vocal fold vibration. However, the relation between imbalanced muscle activation and asymmetric vocal fold vibration is not well understood. This study introduces an asymmetric triangular body-cover model of the vocal folds, controlled by the activation of bilateral intrinsic laryngeal muscles, to investigate the effects of muscle imbalance on vocal fold oscillation. Various scenarios were considered, encompassing imbalance in individual muscles and muscle pairs, as well as accounting for asymmetry in lumped element parameters. Measurements of amplitude and phase asymmetries were employed to match the oscillatory behavior of two pathological cases: unilateral paralysis and muscle tension dysphonia. The resulting simulations exhibit muscle imbalance consistent with expectations in the composition of these voice disorders, yielding asymmetries exceeding 30% for paralysis and below 5% for dysphonia. This underscores the relevance of muscle imbalance in representing phonatory scenarios and its potential for characterizing asymmetry in vocal fold vibration.


Assuntos
Músculos Laríngeos , Fonação , Vibração , Prega Vocal , Prega Vocal/fisiologia , Prega Vocal/fisiopatologia , Humanos , Músculos Laríngeos/fisiologia , Músculos Laríngeos/fisiopatologia , Simulação por Computador , Disfonia/fisiopatologia , Paralisia das Pregas Vocais/fisiopatologia , Modelos Biológicos , Fenômenos Biomecânicos
3.
Clin Otolaryngol ; 47(1): 81-87, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34516048

RESUMO

OBJECTIVE: The goal of this study is to analyze the voice in patients with thyroid pathology through two objective indexes with great diagnostic accuracy. Overall vocal quality was evaluated with the Acoustic Voice Quality Index (AVQI v.03.01) and the breathy voice with the Acoustic Breathiness Index (ABI). DESIGN: Observational case-control study. SETTING: Hospital Universitario Nuestra Señora de Candelaria. PARTICIPANTS: Fifty-eight subjects, 29 controls and 29 thyroidectomy candidates. MAIN OUTCOME MEASURES: All participants with thyroid pathology completed the Spanish version of Voice Handicap Index-10. Also, patient complaints relating to possible laryngeal dysfunction were assessed through closed questions. A sustained vowel and three phonetically balanced sentences were recorded for each subject (118 samples). AVQI v.03.01 and ABI were assessed using the Praat program. Two raters perceptually evaluated each voice sample by using the Grade parameter of GRABS scale. RESULTS: Acoustic analysis shows that 55.17% of subjects present values above the pathological threshold of the AVQI, and 58.62% above that of the ABI. Results of the Student's test comparisons of the AVQI and ABI values between the control group and the thyroid group show significantly higher values of AVQI (t[56]  = -3.85, p < .001) and ABI (t[54.39]  = -4.82, p < .001) in thyroidectomy candidates. CONCLUSION: A mild decrease in vocal quality is part of the symptomatology presented by thyroidectomy candidates.


Assuntos
Disfonia/fisiopatologia , Doenças da Glândula Tireoide/fisiopatologia , Qualidade da Voz , Adulto , Idoso , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Acústica da Fala , Inquéritos e Questionários , Doenças da Glândula Tireoide/cirurgia , Tireoidectomia/métodos
4.
Muscle Nerve ; 63(4): 525-530, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33382480

RESUMO

BACKGROUND: Despite use of qualitative laryngeal electromyography (LEMG) guided botulinum toxin A (BoNT-A) injection for treatment of adductor spasmodic dysphonia (AdSD), unsatisfactory injections and complete "misses" remain problematic. We aimed to determine if the quantitative LEMG measure of number of small segments (NSS) correlates with voice outcomes following (BoNT-A injection for AdSD. METHODS: Automated quantitative LEMG analysis was performed during electromyography (EMG) -guided BoNT-A injection into the thyroarytenoid-lateral cricoarytenoid muscle complex for treatment of AdSD. Pre-injection phonatory NSS values were correlated with clinical voice outcomes and patient reported injection results. RESULTS: Quantitative LEMG measures were obtained for 45 AdSD patients (28 female, mean age 60.8 ± 12.8 years) during EMG-guided BoNT-A injection. Mean sampled NSS during phonation immediately prior to BoNT-A injection was 524 ± 323 (range: 2-904). Mean follow up was 36.5 ± 9.4 days; one patient was lost to follow-up. In comparison to their previous BoNT-A injection, the current injection was rated as worse, same, and better by 13 (29.5%), 25 (56.8%), and 6 (13.6%) patients, respectively. All 4 (9.1%) patients with NSS < 200 rated their BoNT-A injection result as worse than previous, and change in Voice Handicap Index-10 (VHI-10) scores were worse or without change. CONCLUSIONS: Aiming for an NSS value greater than 200 during phonation prior to BoNT-A toxin injection for AdSD may reduce unfavorable voice outcomes.


Assuntos
Toxinas Botulínicas Tipo A/farmacologia , Disfonia/tratamento farmacológico , Disfonia/fisiopatologia , Eletromiografia , Músculos Laríngeos/fisiopatologia , Idoso , Idoso de 80 Anos ou mais , Disfonia/diagnóstico , Eletromiografia/métodos , Feminino , Humanos , Injeções Intramusculares/métodos , Músculos Laríngeos/efeitos dos fármacos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento
5.
Am J Otolaryngol ; 42(3): 102940, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33545449

RESUMO

BACKGROUND: Spasmodic dysphonia (SD) is a neurological condition of the larynx characterised by task specific, involuntary spasms of the intrinsic laryngeal muscles causing frequent voice breaks during speech. The current treatment modality involves Botulinum Toxin injections into the affected group of muscles. This has yielded satisfactory results in Adductor SD (ADSD) and mixed SD but not in Abductor SD (ABSD). Sulcus vocalis is a morphological condition of the vocal folds with invagination of the superficial epithelium into the lamina propria or deeper layers. It is characterised by breathiness in voice and hypophonia. In our voice clinic, patients diagnosed with SD were occasionally found to have a sulcus on flexible stroboscopy. Studies have revealed an asymmetric stimulation of both the adductor and abductor group of muscles in ABSD and a predominant possibly symmetric stimulation of the adductor group of muscles in ADSD. Our objective was to study any significant association between vocal fold sulcus and two groups within SD; group one being ADSD and group two being both ABSD and Mixed SD. A literature review did not reveal any studies suggesting an association between SD and vocal fold sulcus to date. METHODS: A retrospective review of the stroboscopic video recordings as well as file records of all patients diagnosed with SD between January 2016 and September 2019 was conducted at our voice clinic. The first author was the laryngologist who had diagnosed SD and its type on the basis of hearing the voice and making the patient perform various vocal tasks with and without flexible videostroboscopy. The SD patients were divided into two groups with the first group consisting of ADSD patients and the second group consisting of ABSD as well as Mixed SD patients. The presence or absence of vocal fold sulcus was noted in all the SD patients. Odds ratio was used to establish statistical significance of the presence of vocal fold sulcus in the two SD groups. RESULTS: Among the 106 patients of SD, 62 patients were males and 44 were females. A total of 84 patients were diagnosed as ADSD, 10 as ABSD and 12 as Mixed SD patients. Vocal fold sulcus was noted in 5 out of 84 patients of ADSD, 4 out of 10 patients of ABSD, and in 3 out of 12 patients of mixed SD. Odds Ratio of 7.37 (C.I. = 2.063-26.35) was obtained for the second group of patients i.e. ABSD and Mixed SD. CONCLUSION: Our study revealed a significant association between patients of SD having an abductor component (ABSD and mixed SD) and vocal fold sulcus. The two hypothesis proposed for this are the possibility of asymmetrical adductor and abductor muscle stimulation in SD being responsible for the development of a vocal fold sulcus or the primary presence of a vocal fold sulcus contributing to altered sensory feedback resulting in SD. Further study to evaluate this, as well as a study of the vocal response to medialisation procedures for patients of ABSD with sulcus is recommended.


Assuntos
Disfonia/diagnóstico , Disfonia/patologia , Músculos Laríngeos , Laringismo/complicações , Medida da Produção da Fala/métodos , Prega Vocal/patologia , Adolescente , Adulto , Idoso , Disfonia/etiologia , Disfonia/fisiopatologia , Feminino , Humanos , Músculos Laríngeos/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Estroboscopia/métodos , Gravação em Vídeo , Prega Vocal/diagnóstico por imagem , Voz , Adulto Jovem
6.
Clin Otolaryngol ; 46(2): 332-339, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33236412

RESUMO

BACKGROUND: After surgery in the thyroid region, patients may present with phonation or singing difficulty, even within their vocal range. We designed a novel voice evaluation method that reflects subjective and objective voice complications of the surgery. METHODS: This tool recorded patients' voice ranges while singing, which was named the singing voice range profile (singing VRP). Patients were asked to sing "Happy Birthday," which has a one-octave scale, at a comfortable tone and intensity. The singing VRP, standard VRP and voice handicap index-10 (VHI-10) results were recorded before thyroidectomy and 1 and 3 months after thyroidectomy for 128 patients. For subgroup analysis, a group where the maximum F0 of standard VRP in 1 month postoperatively was lower than the highest singing F0 of the preoperative singing VRP was defined as "Collapsed group" and the other group was "Preserved group." RESULTS: The changes in the highest, lowest and range of singing fundamental frequency (F0 ) had decreased at 1 month postoperatively. Subsequently, they had improved significantly at 3 months postoperatively but were lower than those preoperatively (all P < .05, except for the change in the lowest singing F0 between 1 and 3 months postoperatively, P = .274). In the subgroup analysis, the singing range of the collapsed group (n = 65) showed significantly lower VHI-10 scores, range of vocal F0 and singing F0 than those of the preserved group (n = 63) at 1 and 3 months postoperatively (all P < .001). At 3 months postoperatively, the singing F0 range in the preserved group had recovered to the range before surgery (13.0 ± 1.3 vs. 13.1 ± 1.4, P = .746 for the preserved group, and 13.0 ± 1.3 vs 11.5 ± 2.4, P < .001 for the collapsed group). CONCLUSIONS: Parameters measured by singing VRP showed a trend similar to the change in VHI-10 and the maximum F0 of standard VRP. In addition, singing VRP allowed a qualitative classification of the postoperative voice function when combined with standard VRP. Therefore, it can be used as a supplementary voice evaluation tool to reflect the physiologic and functional aspects of voice.


Assuntos
Disfonia/fisiopatologia , Fonação , Complicações Pós-Operatórias/fisiopatologia , Canto , Tireoidectomia , Qualidade da Voz , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
7.
Muscle Nerve ; 62(2): 201-207, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32270505

RESUMO

INTRODUCTION: In this study we aimed to document the prevalence and age of onset of motor impairments and other key symptoms in oculopharyngeal muscular dystrophy (OPMD). METHODS: Retrospective chart review of patients followed at the Saguenay Neuromuscular Clinic (Quebec, Canada). RESULTS: A total of 333 participants with the (GCN)13 mutation were included. Before the age of 75 years, 27% of them had walking limitations, 14% could not climb stairs independently, and 14% used a wheelchair for long distances or daily living. The median age of onset was 54 years for ptosis and dysphagia and 58 years for lower limb proximal weakness. Other frequent symptoms included fatigue, pharyngeal pooling of thickened secretions, and dysphonia. The median age at death was 77 years and the main cause was respiratory disease. DISCUSSION: This study provides important information to help anticipatory guidance for affected people and for the development of therapeutic trials in OPMD.


Assuntos
Atividades Cotidianas , Blefaroptose/fisiopatologia , Transtornos de Deglutição/fisiopatologia , Disfonia/fisiopatologia , Fadiga/fisiopatologia , Limitação da Mobilidade , Debilidade Muscular/fisiopatologia , Distrofia Muscular Oculofaríngea/fisiopatologia , Adulto , Idade de Início , Idoso , Idoso de 80 Anos ou mais , Causas de Morte , Creatina Quinase/sangue , Progressão da Doença , Eletromiografia , Feminino , Humanos , Extremidade Inferior , Masculino , Pessoa de Meia-Idade , Distrofia Muscular Oculofaríngea/sangue , Distrofia Muscular Oculofaríngea/genética , Proteína I de Ligação a Poli(A)/genética , Estudos Retrospectivos , Taxa de Sobrevida , Expansão das Repetições de Trinucleotídeos , Cadeiras de Rodas
8.
Muscle Nerve ; 62(2): 258-261, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32447763

RESUMO

BACKGROUND: Patients with myasthenia gravis (MG) may experience worsening symptoms outside of a clinical setting. A method of diagnosing and triaging such individuals would be valuable. This study gauged the viability of a nurse-administered single breath count test (SBCT) over the telephone for assessing MG exacerbations. METHODS: This was a retrospective, single-center review of a pilot study of 45 telephone calls from patients with MG who had worsening baseline symptoms. SBCTs were administered over the telephone to patients by trained nurses. Patients with a breath count of 25 or less were sent to the emergency department. RESULTS: Using a cutoff count of 25, the nurse-administered telephonic SBCT had a positive predictive value of 71%, sensitivity of 80%, and specificity of 60% in diagnosing an MG exacerbation. CONCLUSIONS: SBCT administered by trained nurses by means of telephone may be a useful screening tool for assessing decreased respiratory function in patients with MG.


Assuntos
Dispneia/fisiopatologia , Miastenia Gravis/diagnóstico , Testes de Função Respiratória/métodos , Exacerbação dos Sintomas , Telefone , Adolescente , Adulto , Idoso , Transtornos de Deglutição/fisiopatologia , Progressão da Doença , Disartria/fisiopatologia , Disfonia/fisiopatologia , Feminino , Humanos , Masculino , Programas de Rastreamento/métodos , Pessoa de Meia-Idade , Miastenia Gravis/fisiopatologia , Enfermeiras e Enfermeiros , Projetos Piloto , Valor Preditivo dos Testes , Curva ROC , Estudos Retrospectivos , Sensibilidade e Especificidade , Adulto Jovem
9.
Stereotact Funct Neurosurg ; 98(3): 200-205, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32316007

RESUMO

Deep brain stimulation (DBS) is a promising new therapy for patients with spasmodic dysphonia (SD). The preliminary results from our randomized controlled trial showed good clinical effects with unilateral left thalamic stimulation in 6 right- handed patients. This suggests that the pathological process underpinning SD may have a "hemisphere dominant" pathway. We describe 2 patients with concurrent essential tremor and SD who had previously undergone bilateral thalamic DBS for their limb tremor. Both patients experienced an unanticipated improvement of their SD symptoms. One patient was right-handed, and the other was mixed left-handed. To investigate the amount of SD improvement following DBS therapy in each hemisphere, 4 different settings were tested: both sides on, left side on, right side on, and both sides off. Both patients most improved following bilateral stimulation. There was, however, a powerful unilateral benefit in both patients with only a small additional benefit from bilateral stimulation. The right-handed patient improved most with left-hemisphere stimulation whereas the mixed left-handed patient improved most with right hemisphere stimulation. There was some discrepancy between the two tests applied in the second patient reflecting the known difficulties to evaluate vocal symptom improvement in SD. We discuss the possible correlation of handedness and speech hemisphere dominance as well as the need for more reliable tests to measure SD severity. Ultimately, we recommend a bilateral approach for future studies, using a patient perception test as the primary outcome and functional imaging to further investigate the correlation of handedness and the amount of hemisphere dominance in SD.


Assuntos
Estimulação Encefálica Profunda/métodos , Disfonia/fisiopatologia , Disfonia/terapia , Tremor Essencial/fisiopatologia , Tremor Essencial/terapia , Lateralidade Funcional/fisiologia , Idoso , Idoso de 80 Anos ou mais , Disfonia/diagnóstico , Tremor Essencial/diagnóstico , Feminino , Humanos , Masculino , Método Simples-Cego , Fala/fisiologia , Tálamo/fisiopatologia
10.
Am J Otolaryngol ; 41(4): 102455, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32475619

RESUMO

BACKGROUND: There are no reliable outcome predictors for functional dysphonia (FD) patients. OBJECTIVES: To investigate if any clinical or phoniatric characteristics could identify FD patients at risk of negative outcome after speech therapy. METHODS: We retrospectively reviewed the results of 78 FD patients treated with the proprioceptive elastic method. Before and one-month after therapy, patients underwent endoscopy, acoustic analysis with Multi-Dimensional Voice Program, and Voice Handicap Index-10 questionnaire (VHI-10). Negative outcome was the persistence of VHI-10 ≥ 13. RESULTS: 26 FD patients had negative outcome (i.e. VHI-10 ≥ 13) after speech therapy. At univariate analysis, clinical variables (i.e. sex, age, comorbidities, dysphonia duration, and professional voice use) were not associated with the outcome. Elevated Jitter% (Jitt; p = 0.03), Shimmer% (Shim; statistical trend, p = 0.06), and Noise to Harmonics Ratio (statistical trend, p = 0.06) were found in patients with poor results. At multivariate analysis, higher Jitt was an independent negative prognostic factor (p = 0.02), while a statically trend was identified for Shim (p = 0.06). A panel of Jitt >1.5 and Shim >5.1 showed an acceptable discriminatory power (AUC [ROC] = 0.76) according to Hosmer and Lemeshow scale. CONCLUSION: A panel of two acoustic analysis parameters could help in identifying FD patients at risk of speech therapy failure. Further studies in these patients are needed to evaluate the most efficient treatment protocol.


Assuntos
Disfonia/diagnóstico , Disfonia/reabilitação , Fonação , Acústica da Fala , Medida da Produção da Fala/métodos , Fonoterapia/métodos , Falha de Tratamento , Qualidade da Voz , Voz , Adulto , Disfonia/fisiopatologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Risco
11.
Clin Otolaryngol ; 45(5): 796-804, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32534474

RESUMO

BACKGROUND: Treatment approaches for voice therapy are diverse, yet their differential effects are not well understood. Evaluations of treatment effects across approaches are important for clinical guidance and evidence-based practice. OBJECTIVE OF REVIEW: To quantify the evidence of treatment effectiveness on the outcome measure Voice Handicap Index with the 30-items (VHI-30) from existing randomised controlled/clinical trials (RCT) of voice therapy using the statistical approach of a network meta-analysis (NMA) with a random effects model. TYPE OF REVIEW: Meta-analysis. SEARCH STRATEGY: We searched in MEDLINE (PubMed, 1950 to 2019), Embase (1974 to 2019) and Science Citation Index (1994 to 2019) using five key terms. The inclusion criteria were reports of randomised controlled/clinical trials (RCTs) published in English or German which evaluated the effectiveness of a specific voice therapy treatment using VHI-30 as an outcome measure in adult participants with non-organic or organic voice disorders. Studies were excluded if participants had been diagnosed with neurological motor speech disorders or who were vocally healthy. Furthermore, no medical, pharmacological or instrumental (eg voice amplification) treatments were considered. EVALUATION METHOD: The primary outcome variable was VHI-30 with a score from 0 to 120. The pre-post treatment change in VHI-30 scores was an average score of 13 points related to various VHI-30 test-retest results. RESULTS: We retrieved 464 publications (ie with duplicates) and included 13 RCTs, which evaluated nine interventions, in the final analysis. The most effective intervention with a significant and clinically relevant effect was Stretch-and-Flow Phonation (SFP) (mean pre-post difference -28.37, 95% confidence interval [CI], -43.05 to-13.68). Resonant Voice (RV), the Comprehensive Voice Rehabilitation Program (CVRP) and Vocal Function Exercises (VFE) also demonstrated significant improvements. CONCLUSIONS: Of the nine voice interventions identified with the present NMA, SFP, RVT, CVRP, and VFE effectively improved VHI-30 scores from pre- to post-treatment. SFP proved to be the most significant and clinically relevant treatment. Further contributions of high-quality intervention studies are needed to support evidence-based practice in vocology.


Assuntos
Pessoas com Deficiência/reabilitação , Disfonia/reabilitação , Metanálise em Rede , Fonação/fisiologia , Qualidade da Voz , Treinamento da Voz , Disfonia/fisiopatologia , Humanos , Resultado do Tratamento
12.
Pulm Pharmacol Ther ; 56: 108-115, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-31004747

RESUMO

The larynx is one of the most highly innervated organs in humans, adapted to simultaneously deliver several key respiratory functions including airway protection, swallowing and phonation. In some individuals the larynx can adopt a state that could be considered 'dysfunctional' or maladaptive; resulting in or contributing to a range of clinical disorders such as chronic refractory cough, inducible laryngeal obstruction (previously termed paradoxical vocal fold movement or vocal cord dysfunction), muscle tension dysphonia and globus pharyngeus. These disorders appear to display significant overlap in clinical symptomology and in many cases have features of concomitant or allied sensory dysfunction; often described as laryngeal hypersensitivity. The recognition and accurate assessment of both laryngeal dysfunction±hypersensitivity is important to ensure accurate diagnosis and effective delivery of targeted treatment and therapeutic monitoring. Accordingly, there is increasing in the methodologies proposed to assess laryngeal function. These range from simple questionnaires to targeted investigation(s), assessing both sensory function and the laryngeal motor response, under both resting and provoked situations. This review provides a brief overview of the current state of knowledge in the field of laryngeal dysfunction and hypersensitivity assessment.


Assuntos
Doenças da Laringe/fisiopatologia , Laringe/fisiologia , Animais , Tosse/etiologia , Tosse/fisiopatologia , Disfonia/etiologia , Disfonia/fisiopatologia , Sensação de Globus/fisiopatologia , Humanos , Doenças da Laringe/diagnóstico , Doenças da Laringe/terapia , Laringe/fisiopatologia
13.
Cereb Cortex ; 28(1): 158-166, 2018 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-29117296

RESUMO

Spasmodic dysphonia (SD), or laryngeal dystonia, is an isolated task-specific dystonia of unknown causes and pathophysiology that selectively affects speech production. Using next-generation whole-exome sequencing in SD patients, we computed polygenic risk score from 1804 genetic markers based on a genome-wide association study in another form of similar task-specific focal dystonia, musician's dystonia. We further examined the associations between the polygenic risk score, resting-state functional connectivity abnormalities within the sensorimotor network, and SD clinical characteristics. We found that the polygenic risk of dystonia was significantly associated with decreased functional connectivity in the left premotor/primary sensorimotor and inferior parietal cortices in SD patients. Reduced connectivity of the inferior parietal cortex was correlated with the age of SD onset. The polygenic risk score contained a significant number of genetic variants lying near genes related to synaptic transmission and neural development. Our study identified a polygenic contribution to the overall genetic risk of dystonia in the cohort of SD patients. Associations between the polygenic risk and reduced functional connectivity of the sensorimotor and inferior parietal cortices likely represent an endophenotypic imaging marker of SD, while genes involved in synaptic transmission and neuron development may be linked to the molecular pathophysiology of this disorder.


Assuntos
Disfonia/genética , Disfonia/fisiopatologia , Predisposição Genética para Doença , Herança Multifatorial , Córtex Sensório-Motor/fisiopatologia , Mapeamento Encefálico , Disfonia/diagnóstico por imagem , Feminino , Variação Genética , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Vias Neurais/diagnóstico por imagem , Vias Neurais/fisiopatologia , Descanso , Córtex Sensório-Motor/diagnóstico por imagem , Sequenciamento do Exoma
14.
J Acoust Soc Am ; 145(2): 881, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30823802

RESUMO

The effective depth of vocal fold vibration is self-regulated and generally not known a priori in vocalization. In this study, the effective depth was quantified systematically under various phonatory conditions using a fiber-gel finite element vocal fold model. The horizontal and vertical excursions of each finite element nodal point trajectory were recorded to compute trajectory areas. The extent of vibration was then studied based on the variation of trajectory radii as a function of depth in several coronal sections along the anterior-posterior direction. The results suggested that the vocal fold nodal trajectory excursions decrease systematically as a function of depth but are affected by the layered structure of the vocal folds. The effective depth of vibration was found to range between 15 and 55% of the total anatomical depth across all phonatory conditions. The nodal trajectories from the current study were compared qualitatively with the results from excised human hemi-larynx experiments published in Döllinger and Berry [(2006). J. Voice. 20(3), 401-413]. An estimate of the effective mass of a one-mass vocal fold model was also computed based on the effective depth of vibration observed in this study under various phonatory conditions.


Assuntos
Modelos Biológicos , Vibração , Prega Vocal/fisiologia , Disfonia/fisiopatologia , Análise de Elementos Finitos , Humanos , Laringe/fisiologia
15.
J Acoust Soc Am ; 145(2): 775, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30823814

RESUMO

Occupational speech users such as schoolteachers develop voice disorders at higher rates than the general population. Previous research has suggested that room acoustics may influence these trends. The research reported in this paper utilized varying acoustical conditions in a reverberant room to assess the effects on vocal parameters of healthy talkers. Thirty-two participants were recorded while completing a battery of speech tasks under eight room conditions. Vocal parameters were derived from the recordings and the statistically significant effects of room acoustics were verified using mixed-model analysis of variance tests. Changes in reverberation time (T20), early decay time (EDT), clarity index (C50), speech transmission index (STI), and room gain (GRG) all showed highly correlated effects on certain vocal parameters, including speaking level standard deviation, speaking rate, and the acoustic vocal quality index. As T20, EDT, and GRG increased, and as C50 and STI decreased, vocal parameters showed tendencies toward dysphonic phonation. Empirically derived equations are proposed that describe the relationships between select room-acoustic parameters and vocal parameters. This study provides an increased understanding of the impact of room acoustics on voice production, which could assist acousticians in improving room designs to help mitigate unhealthy vocal exertion and, by extension, voice problems.


Assuntos
Acústica , Acústica da Fala , Voz/fisiologia , Absorção de Radiação , Disfonia/fisiopatologia , Feminino , Humanos , Masculino , Saúde Ocupacional , Fonação/fisiologia , Medida da Produção da Fala , Qualidade da Voz/fisiologia
16.
J Acoust Soc Am ; 145(5): 2871, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-31153319

RESUMO

Recent studies have demonstrated that analysis of laboratory-quality voice recordings can be used to accurately differentiate people diagnosed with Parkinson's disease (PD) from healthy controls (HCs). These findings could help facilitate the development of remote screening and monitoring tools for PD. In this study, 2759 telephone-quality voice recordings from 1483 PD and 15 321 recordings from 8300 HC participants were analyzed. To account for variations in phonetic backgrounds, data were acquired from seven countries. A statistical framework for analyzing voice was developed, whereby 307 dysphonia measures that quantify different properties of voice impairment, such as breathiness, roughness, monopitch, hoarse voice quality, and exaggerated vocal tremor, were computed. Feature selection algorithms were used to identify robust parsimonious feature subsets, which were used in combination with a random forests (RFs) classifier to accurately distinguish PD from HC. The best tenfold cross-validation performance was obtained using Gram-Schmidt orthogonalization and RF, leading to mean sensitivity of 64.90% (standard deviation, SD, 2.90%) and mean specificity of 67.96% (SD 2.90%). This large scale study is a step forward toward assessing the development of a reliable, cost-effective, and practical clinical decision support tool for screening the population at large for PD using telephone-quality voice.


Assuntos
Disfonia/fisiopatologia , Doença de Parkinson/fisiopatologia , Qualidade da Voz/fisiologia , Voz/fisiologia , Idoso , Disfonia/diagnóstico , Feminino , Humanos , Masculino , Doença de Parkinson/diagnóstico , Acústica da Fala , Telefone
17.
Int J Lang Commun Disord ; 54(1): 50-61, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30408272

RESUMO

BACKGROUND: To date, the immediate effects of a semi-occluded vocal tract (SOVT) configuration have been thoroughly demonstrated. However, it is not yet sufficiently confirmed whether a therapy programme (i.e. longer than one session) using SOVT exercises leads to an enhanced phonation and improved vocal quality. AIMS: The aim of this study was to investigate the effect of three SOVT therapy programmes: lip trill, water-resistance therapy (WRT) and straw phonation, on the vocal quality, vocal capacities, psychosocial impact and vocal tract discomfort of patients with dysphonia. METHODS & PROCEDURES: A blocked-randomized sham-controlled trial was used. Thirty-five patients with dysphonia (mean age = 21 years; 33 women, two men) were assigned to either a lip trill group, a WRT group, a straw phonation group or a control group using blocked randomization. The lip trill, WRT and straw phonation groups practised their respective SOVT exercise across 3 weeks, whereas the control group received a sham treatment across the same time span. A multidimensional voice assessment consisting of both objective (multiparametric indices: Dysphonia Severity Index (DSI), Acoustic Voice Quality Index (AVQI)) and subjective (subject's self-report, auditory-perceptual evaluation) vocal outcomes was performed by a blinded assessor pre- and post-therapy. OUTCOMES & RESULTS: Lip trill and straw phonation therapy led to a significant improvement in DSI. Auditory-perceptual grade and roughness significantly decreased after straw phonation. Lip trill and WRT both led to a significant decrease in Voice Handicap Index. Subjects reported a better self-perceived vocal quality and a more comfortable voice production after WRT. No changes were found after the sham treatment in the control group. CONCLUSIONS & IMPLICATIONS: Results suggest that SOVT therapy programmes including lip trill or straw phonation can improve the objective vocal quality in patients with dysphonia. Auditory-perceptual improvements were found after straw phonation therapy, whereas psychosocial improvements were found after lip trill and WRT. Patients seem to experience more comfort and a better self-perceived vocal quality after WRT. This study supports the use of the three SOVT therapy programmes in clinical practice. They all had a positive impact on one or more outcomes of the multidimensional voice assessment. Strikingly, vocal quality outcomes were not in line with the subject's opinion. Larger-scale investigation is needed to support these preliminary findings.


Assuntos
Disfonia/terapia , Fonação , Prega Vocal/fisiopatologia , Qualidade da Voz , Treinamento da Voz , Adolescente , Adulto , Disfonia/diagnóstico , Disfonia/fisiopatologia , Feminino , Humanos , Masculino , Recuperação de Função Fisiológica , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
18.
Folia Phoniatr Logop ; 71(1): 42-55, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30541007

RESUMO

BACKGROUND/AIMS: Specific language impairment (SLI) is characterized by deficits in language ability. However, studies have also reported motor impairments in SLI. It has been proposed that the language and motor impairments in SLI share common origins. This exploratory study compared the gross, fine, oral, and speech motor skills of children with SLI and children with typical development (TD) to determine whether children with SLI would exhibit difficulties on particular motor tasks and to inform us about the underlying cognitive deficits in SLI. METHODS: A total of 13 children with SLI (aged 8-12 years) and 14 age-matched children with TD were administered the Movement Assessment Battery for Children - Second Edition and the Verbal Motor Production Assessment for Children to examine gross and fine motor skills and oral and speech motor skills, respectively. RESULTS: Children with SLI scored significantly lower on gross, fine, and speech motor tasks relative to children with TD. In particular, children with SLI found movements organized into sequences and movement modifications challenging. On oral motor tasks, however, children with SLI were comparable to children with TD. CONCLUSION: Impairment of the motor sequencing and adaptation processes may explain the performance of children with SLI on these tasks, which may be suggestive of a procedural memory deficit in SLI.


Assuntos
Transtornos do Desenvolvimento da Linguagem/fisiopatologia , Destreza Motora , Estudos de Casos e Controles , Criança , Disfonia/fisiopatologia , Extremidades/fisiopatologia , Feminino , Transtornos Neurológicos da Marcha/fisiopatologia , Humanos , Arcada Osseodentária/fisiopatologia , Lábio/fisiopatologia , Masculino , Transtornos das Habilidades Motoras/fisiopatologia , Desempenho Psicomotor , Língua/fisiopatologia
19.
Folia Phoniatr Logop ; 71(1): 7-15, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30481774

RESUMO

AIMS: To assess the frequency of vocal symptoms and risk factors in individuals with high and low anxiety and to investigate the relationships among vocal symptoms, risk factors, and anxiety levels. PATIENTS AND METHODS: A total of 201 patients of both sexes with a mean age of 42.88 years (SD = 15.78) served as participants. The patients were divided into two groups according to the level of trait anxiety: a low-anxiety group (n = 108) and a high-anxiety group (HAG, n = 93). Data were collected using three self-assessment instruments: the Vocal Screening Protocol, the Voice Symptom Scale (VoiSS), and the State-Trait Anxiety Inventory (STAI). RESULTS: The HAG presented higher scores in all VoiSS domains. There were positive correlations between the total and emotional scores on the VoiSS and the STAI Trait subscale. There were significant associations between 13 vocal risk factors and anxiety levels. CONCLUSION: Individuals with high anxiety present a higher frequency of vocal symptoms related to either vocal limitation, physical aspects, or the emotional impact of dysphonia. The higher the trait anxiety, the greater the total and emotional scores on the VoiSS. Anxiety levels are associated with certain vocal risk factors.


Assuntos
Transtornos de Ansiedade/fisiopatologia , Ansiedade/fisiopatologia , Disfonia/etiologia , Qualidade da Voz , Adulto , Ansiedade/psicologia , Transtornos de Ansiedade/psicologia , Estudos de Casos e Controles , Autoavaliação Diagnóstica , Disfonia/fisiopatologia , Escolaridade , Meio Ambiente , Feminino , Hábitos , Humanos , Masculino , Pessoa de Meia-Idade , Ocupações , Fatores de Risco , Avaliação de Sintomas
20.
Clin Exp Rheumatol ; 36 Suppl 111(2): 78-84, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29799391

RESUMO

OBJECTIVES: Granulomatosis with polyangiitis is a rare autoimmune disease of the group of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitides. Involvement of the ear, nose and throat (ENT)-region is only described in a few case series and case reports. The objective of this study is to systematically characterise the ENT-involvement in a large series of GPA patients. METHODS: GPA patients examined in the Department of Otorhinolayngology of the Christian-Albrechts-University of Kiel between 1990 and 2012 were included. Diagnosis was based on histological, serological and clinical parameters. GPA patients were examined in a standardised way based on the Ear Nose and Throat Activity Score (ENTAS) or its precursor. Medical history, ENT examination, diagnostic findings (ear, nose) and cranial radiology were documented cumulatively. RESULTS: A total of 230 GPA patients were included in this study. Over 95% of them showed ENT-involvement. 59% of the patients showed nasal obstructions, 57% a loss of smell. A hearing loss was diagnosed in 23% of the patients, 50% involvement in MR or CT scans and 15% showed laryngeal involvement. CONCLUSIONS: The data of the largest monocentric study presented here demonstrate a frequent ENT-involvement in GPA patients. Rhinological and ontological manifestations are most common.


Assuntos
Granulomatose com Poliangiite/fisiopatologia , Otorrinolaringopatias/fisiopatologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Audiometria de Tons Puros , Tontura/etiologia , Tontura/fisiopatologia , Disfonia/etiologia , Disfonia/fisiopatologia , Dor de Orelha/etiologia , Dor de Orelha/fisiopatologia , Epistaxe/epidemiologia , Epistaxe/fisiopatologia , Feminino , Granulomatose com Poliangiite/complicações , Granulomatose com Poliangiite/diagnóstico por imagem , Perda Auditiva/etiologia , Perda Auditiva/fisiopatologia , Testes Auditivos , Humanos , Laringoscopia , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Transtornos do Olfato/etiologia , Transtornos do Olfato/fisiopatologia , Otorrinolaringopatias/diagnóstico por imagem , Otorrinolaringopatias/etiologia , Otoscopia , Rinite/etiologia , Rinite/fisiopatologia , Rinomanometria , Zumbido/etiologia , Zumbido/fisiopatologia , Adulto Jovem
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