Percepção auditiva do desvio vocal por mulheres disfônicas e não disfônicas

• Autor(a) principal: França, Fernanda Pereira
• Data de Publicação: 2022
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFPB
• Texto Completo: https://repositorio.ufpb.br/jspui/handle/123456789/29531
• topic: Voz; Percepção auditiva; Disfonia; Qualidade da voz; Voice; Auditory perception; Dysphonia; Voice quality; Percepción auditiva; Afonía; Calidad de voz; CNPQ::LINGUISTICA, LETRAS E ARTES::LINGUISTICA

INTRODUCTION: The identification and discrimination of acoustic-perceptual parameters involved in dysphonia by dysphonic and non-dysphonic individuals is still obscure in the literature. The search for understanding the factors that are involved in the genesis and, mainly, in the maintenance of behavioral dysphonia opens spaces for perceptive investigations of voice production. PURPOSE: To investigate the auditory perception of vocal deviation by dysphonic and non-dysphonic women. METHODS: 24 dysphonic (GE) and 10 non-dysphonic (GC) women participated in the research, assisted at the Integrated Voice Studies Laboratory (LIEV). Vocal screening was performed, recording of the emission of the sustained /Ɛ/ vowel, audiological examination and acoustic analysis of the measures were performed: fo, DPfo, jitter shimmer, GNE, HNR, CPPS, F1 and F2. A speech therapist performed the auditoryperceptual judgment of voice quality, in relation to the predominance and degree of deviation. Through a database, 38 stimuli were selected, including 28 samples of dysphonic voices and 10 samples of normal voices. Five perception experiments were performed: 1st, 2nd and 3rd experiment: categorization tasks (normal voices x dysphonic voices; normal voices x predominantly rough voices; normal voices x predominantly breathy voices); 4th and 5th experiment: discrimination tasks of the degrees of vocal deviation (different degrees of roughness; degrees of breathiness). Data were tabulated and submitted to descriptive and inferential analysis. RESULTS: The women from the EG had a lower success rate (52.2%) in identifying dysphonic voices in relation to the success rate (69.6%) of the women from the CG (p-value < 0.001). The women in the EG had a lower success rate in identifying predominantly rough (62.7%) and breathy (62%) voices, compared to the success rate of the women in the CG (73% and 75.6%, respectively) (p-value < 0.001). There was a moderate negative correlation between the success rate of non-dysphonic women and the shimmer values. As for the discrimination of the degrees of roughness, the women in the CG had a higher accuracy rate in the discrimination between the degrees: mild and moderate (100%), compared to women with a predominance of roughness degrees mild (60%) and moderate (63%); and moderate and intense (100%), in relation to women with a predominance of moderate roughness (74.1%). As for breathiness, the women in the CG had a higher rate of accuracy in the discrimination between normal and predominantly breathy voices with a mild degree (83.3%), compared to women with a predominance of mild breathiness (25%). The women in the CG had a lower success rate in the discrimination between predominantly breathy voices between mild and moderate degrees (33.3%), compared to women with a predominance of mild roughness (86.7%), predominance of mild breathiness (91.7%) and moderate (83.3%). CONCLUSION: The presence of dysphonia can interfere with the identification of dysphonic voices. Dysphonic women had a lower accuracy rate in identifying dysphonia, and roughness and breathiness parameters, when compared to non-dysphonic women. Shimmer was associated with a higher rate of correct answers for predominantly breathy voices by nondysphonic women. Dysphonic women had difficulties in discriminating the predominance parameters and the degree of deviation related to their own vocal quality.