Nonlinear analysis by phase space reconstruction of healthy elderly voices.

Autor:	Fernandes LA; Departamento de Fonoaudiologia, Faculdade de Filosofia e Ciências, Universidade Estadual Paulista 'Júlio de Mesquita Filho' - UNESP - Marília (SP), Brasil., Marino VCC; Departamento de Fonoaudiologia, Faculdade de Filosofia e Ciências, Universidade Estadual Paulista 'Júlio de Mesquita Filho' - UNESP - Marília (SP), Brasil., Spazzapan EA; Departamento de Fonoaudiologia, Faculdade de Filosofia e Ciências, Universidade Estadual Paulista 'Júlio de Mesquita Filho' - UNESP - Marília (SP), Brasil., Galdino DG; Departamento de Fonoaudiologia, Universidade do Unoeste Paulista - UNOESTE - Presidente Prudente (SP), Brasil., Teles LCDS; Departamento de Fonoaudiologia, Universidade de São Paulo - USP - Bauru (SP), Brasil., Montagnolli AN; Universidade Federal de São Carlos - UFSCar, São Carlos (SP), Brasil., Kakuda DS; Departamento de Fonoaudiologia, Faculdade de Filosofia e Ciências, Universidade Estadual Paulista 'Júlio de Mesquita Filho' - UNESP - Marília (SP), Brasil., Fabbron EMG; Departamento de Fonoaudiologia, Faculdade de Filosofia e Ciências, Universidade Estadual Paulista 'Júlio de Mesquita Filho' - UNESP - Marília (SP), Brasil.
Jazyk:	Portuguese; English
Zdroj:	CoDAS [Codas] 2023 Jun 26; Vol. 35 (3), pp. e20210280. Date of Electronic Publication: 2023 Jun 26 (Print Publication: 2023).
DOI:	10.1590/2317-1782/20232021280pt
Abstrakt:	Purpose: To compare the results of the non-linear acoustic analysis of elderly male and female voices, speakers of Brazilian Portuguese. Methods: Recordings of 14 men and 15 women were used. The voices were consensually judged to be vocally healthy by three trained speech therapists. The non-linear acoustic analysis was performed by the Phase Space Reconstruction (PSR) analysis using the Voice Analysis program. Results: A significant difference was observed in the parameter irregularity (p = 0.001) and spacing (p = 0.005), with worse results for the male group. While 93% of male voices presented degrees 2 or 3 of irregularity, these degrees were observed in 53% of female voices. In 78.6% of male voices, medium to large spacing was observed, a fact observed only in 26.7% of women. Conclusion: The results of the non-linear analysis, through the Phase Space Reconstruction, using the CIS Protocol, in the voices of the elderly, showed the best result in terms of the number of curves (four or more). Regarding the irregularity of the tracing, in men, the majority presented grades 2 and 3 and in women, half presented grade 1. Regarding the spacing, 78.6% of the male voices had medium to large spacing, a fact observed only in 26.7% of women.There was a difference between the sexes in the vocal findings of the elderly by the CIS protocol with the PSR, pointing out worse results irregularity and spacing in the male population, which suggests greater vocal aperiodicity in elderly men.
Databáze:	MEDLINE
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