Publicação: Residual signal auto-correlation to evaluate speech in Parkinson's disease patients
Carregando...
Arquivos
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Associação Arquivos de Neuro- Psiquiatria
Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
Objective: To evaluate the maximum residual signal auto-correlation also known as pitch amplitude (PA) values in patients with Parkinson's disease (PD) patients. Method. The signals of 21 Parkinson's patients were compared with 15 healthy individuals, divided according age and gender. Results: Statistical difference was seen between groups for PA, 0.39 for controls and 0.25 for PD. Normal value threshold was set as 0.3; (p <= 0.001). In the Parkinson's group 80.77%, and in the control group only 12.28%, had a PA < 0.3 demonstrating an association between these variables. The dispersion diagram for age and PA for PD individuals showed p=0.01 and r=0.54. There was no significant difference in relation to gender and PA between groups: Conclusion: the significant differences in pitch's amplitude between PD patients and healthy individuals demonstrate the methods specificity.-The results showed the need of prospective controlled studies,to improve the use and indications of residual signal auto-correlation to evaluate speech in PD patients.
Descrição
Palavras-chave
Parkinson's disease, speech analysis, residual signal
Idioma
Inglês
Como citar
Arquivos de Neuro-psiquiatria. São Paulo Sp: Associação Arquivos de Neuro- Psiquiatria, v. 64, n. 4, p. 912-915, 2006.
