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1.
J Voice ; 31(3): 282-290, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-27793519

RESUMO

OBJECTIVES: We conducted a study to obtain quantitative parameters of the vocal dynamic using high-speed videolaryngoscopy and to characterize the vocal fold vibration pattern of healthy individuals by analyzing glottal area waveforms and high-speed kymography. METHODS: Laryngeal images of 45 healthy individuals were captured using high-speed videolaryngoscopy. The open and speed quotients of the glottal area waveforms and high-speed kymography were obtained and statistically analyzed according to the gender of each individual. RESULTS: Glottal area waveforms revealed average values of 0.85 and 1.16 for open and speed quotients, respectively, for women, and 0.70 and 1.19 for men. Using high-speed kymography, quantitative parameters of open and speed quotients for women were 0.62 and 1.02, respectively, and for men were 0.57 and 1.12. By gender, a significant statistical difference emerged for open quotients obtained from both glottal area waveforms (P = 0.004) and high-speed kymography (P = 0.013). CONCLUSION: Obtained by using computational tools specifically for analyzing laryngeal images from high-speed videolaryngoscopy, quantitative parameters of glottal area waveforms and high-speed kymography in healthy individuals provide reference data and normality for future studies.


Assuntos
Glote/fisiologia , Quimografia , Laringoscopia , Fonação , Gravação em Vídeo , Prega Vocal/fisiologia , Adolescente , Adulto , Fenômenos Biomecânicos , Brasil , Feminino , Glote/anatomia & histologia , Voluntários Saudáveis , Humanos , Interpretação de Imagem Assistida por Computador , Quimografia/normas , Laringoscopia/normas , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Padrões de Referência , Fatores Sexuais , Fatores de Tempo , Vibração , Gravação em Vídeo/normas , Prega Vocal/anatomia & histologia , Adulto Jovem
2.
CoDAS ; 25(6): 577-583, 25/1jan. 2013. tab, graf
Artigo em Inglês | LILACS | ID: lil-699836

RESUMO

Purpose: To identify the immediate effects of voiced vibration and vocal fry exercises on healthy subjects by means of acoustic parameters and high-speed kymography. Methods: Thirty healthy subjects (18 women and 12 men, aged from 19 to 45 years old) participated in this study. The voices were recorded at the range of 44.100 samples/second, before and after of the vocal exercises. We developed a computational routine to extract jitter and shimmer. High-speed kymography was generated from laryngeal images for the analysis of the phase times: closed (CPh), open (OPh), of closing (cPh) and of opening (oPh) and used the paired t-Student test and the Mann-Whitney test, with a significance level of 0.05. Results: After voiced vibrations, acoustic parameters showed reduced jitter for both genders (p=0.018 for men and p<0.01 for women) and reduced shimmer for female voices (p<0.01). There was a decrease in CPh (p=0.046) and cPh (p=0.026) and an increase in OPh (p=0.05) in female vocal folds. After vocal fry, we identified decreased jitter (p<0.01) in female voices and cPh (p=0.026) in male vocal folds. Conclusion: We observed more positive immediate effects of the voiced vibrations, mainly in voice quality and vocal folds among females. Nevertheless, studies with larger male sample and investigation of the appropriate time of vocal fry are necessary to confirm the results of this search. .


OBJETIVO: Identificar efeitos imediatos das vibrações sonorizadas e do som basal em indivíduos saudáveis por meio de parâmetros acústicos e quimografia de alta velocidade. MÉTODOS: Participaram 30 sujeitos, 12 homens e 18 mulheres (19 a 45 anos) sem alterações laríngeas. As vozes foram gravadas à taxa de 44.100 amostras/segundo e as videolaringoscopias de 4.000 quadros/segundo, antes e depois dos exercícios vocais. Foi desenvolvida uma rotina computacional para extrair Jitter e Shimmer. Foram geradas quimografias de alta velocidade a partir das imagens laríngeas para a análise dos tempos de fase: fechada (FF); aberta (FA); de fechamento (Ff) e de abertura (Fa), e usados o Teste t de Student pareado e o teste Mann-Whitney, com nível de significância de 0,05. RESULTADOS: Após as vibrações sonorizadas, houve diminuição de Jitter (0,018 para homens e p<0,01para mulheres) para ambos os gêneros e diminuição de Shimmer (p<0,01) ao gênero feminino. Houve diminuição de FF (p=0,046) e de Ff (p=0,026) e aumento de FA (p=0,05) em pregas vocais femininas. Após o som basal, foram identificados diminuição de Jitter (p<0,01) em vozes femininas e da Ff (p=0,026) em pregas vocais masculinas. CONCLUSÃO: Foi possível verificar mais efeitos imediatos positivos após as vibrações sonorizadas principalmente em qualidade vocal e pregas vocais de mulheres. No entanto, são necessárias pesquisas com maior número de amostras masculinas e investigação sobre o tempo adequado do som basal para corroboração dos resultados desta pesquisa. .


Assuntos
Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Quimografia , Vibração , Prega Vocal/fisiologia , Qualidade da Voz/fisiologia , Fatores Sexuais
3.
Int. arch. otorhinolaryngol. (Impr.) ; 17(1): 74-79, Jan.-Mar. 2013. ilus, tab
Artigo em Inglês | LILACS | ID: lil-662530

RESUMO

Introduction: The effects of voiced vibration technique can be assessed by laryngeal imaging. Kymographic images derived from high-speed videoendoscopy allow actual visualization of vocal folds vibration. Purpose: The aim of this study is to identify the immediate effects of the voiced vibration technique in healthy vocal folds using high-speed digital laryngeal imaging. Methods: Samples were obtained from 15 healthy subjects with no history of voice disorders (6 men and 9 women aged 21 to 43 years). High-speed videoendoscopy recordings were performed before and after the voiced vibration technique. Kymographic images were obtained using high-speed videoendoscopy. The vocal folds were examined in their open and closed positions and the characteristics of the opening and closing phases were determined. A customize computational routine was used quantify these parameters. The closing, opening, and speed quotients were also calculated. Results: In this study, women displayed statistically significant differences in opened phase (P= 0.05*), closed phase (P= 0.046*), and closing phase (P= 0.026*) phase characteristics. Men displayed the highest difference rate in opening time characteristics (P= 0.06). The closing and opening quotients for the female group showed significant differences (P= 0.029* and P= 0.049*, respectively). The speed quotient exhibited statistically significant differences in the male group (P= 0.048*). Conclusion: The kymographic images indicated that the immediate effect of the voiced vibration technique was smooth contact in healthy vocal fold vibration...


Assuntos
Humanos , Masculino , Feminino , Adulto , Quimografia , Intensificação de Imagem Radiográfica , Vibração , Voz , Treinamento da Voz
4.
Codas ; 25(6): 577-83, 2013.
Artigo em Inglês, Português | MEDLINE | ID: mdl-24626983

RESUMO

PURPOSE: To identify the immediate effects of voiced vibration and vocal fry exercises on healthy subjects by means of acoustic parameters and high-speed kymography. METHODS: Thirty healthy subjects (18 women and 12 men, aged from 19 to 45 years old) participated in this study. The voices were recorded at the range of 44.100 samples/second, before and after of the vocal exercises. We developed a computational routine to extract jitter and shimmer. High-speed kymography was generated from laryngeal images for the analysis of the phase times: closed (CPh), open (OPh), of closing (cPh) and of opening (oPh) and used the paired t-Student test and the Mann-Whitney test, with a significance level of 0.05. RESULTS: After voiced vibrations, acoustic parameters showed reduced jitter for both genders (p=0.018 for men and p<0.01 for women) and reduced shimmer for female voices (p<0.01). There was a decrease in CPh (p=0.046) and cPh (p=0.026) and an increase in OPh (p=0.05) in female vocal folds. After vocal fry, we identified decreased jitter (p<0.01) in female voices and cPh (p=0.026) in male vocal folds. CONCLUSION: We observed more positive immediate effects of the voiced vibrations, mainly in voice quality and vocal folds among females. Nevertheless, studies with larger male sample and investigation of the appropriate time of vocal fry are necessary to confirm the results of this search.


Assuntos
Quimografia , Vibração , Prega Vocal/fisiologia , Qualidade da Voz/fisiologia , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fatores Sexuais , Adulto Jovem
5.
Int Arch Otorhinolaryngol ; 17(1): 74-9, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25991997

RESUMO

INTRODUCTION: The effects of voiced vibration technique can be assessed by laryngeal imaging. Kymographic images derived from high-speed videoendoscopy allow actual visualization of vocal folds vibration. PURPOSE: The aim of this study is to identify the immediate effects of the voiced vibration technique in healthy vocal folds using high-speed digital laryngeal imaging. METHODS: Samples were obtained from 15 healthy subjects with no history of voice disorders (6 men and 9 women aged 21 to 43 years). High-speed videoendoscopy recordings were performed before and after the voiced vibration technique. Kymographic images were obtained using high-speed videoendoscopy. The vocal folds were examined in their open and closed positions and the characteristics of the opening and closing phases were determined. A customize computational routine was used quantify these parameters. The closing, opening, and speed quotients were also calculated. RESULTS: In this study, women displayed statistically significant differences in opened phase (P = 0.05*), closed phase (P = 0.046*), and closing phase (P = 0.026*) phase characteristics. Men displayed the highest difference rate in opening time characteristics (P = 0.06). The closing and opening quotients for the female group showed significant differences (P = 0.029* and P = 0.049*, respectively). The speed quotient exhibited statistically significant differences in the male group (P = 0.048*). CONCLUSION: The kymographic images indicated that the immediate effect of the voiced vibration technique was smooth contact in healthy vocal fold vibration.

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