The relationship between working memory and apraxia of speech

The relationship between working memory and apraxia of speech

Alternative title A interrelação entre memória operacional e apraxia de fala
Author Martins, Fernanda Chapchap Autor UNIFESP Google Scholar
Ortiz, Karin Zazo Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract The present study aimed to verify the relationship between working memory (WM) and apraxia of speech and explored which WM components were involved in the motor planning of speech. A total of 22 patients and 22 healthy adults were studied. These patients were selected according to the following inclusion criteria: a single brain lesion in the left hemisphere, presence of apraxia of speech and sufficient oral comprehension. This study involved assessment of apraxia of speech and evaluation of working memory capacity. The performance of apraxic patients was significantly poorer than that of controls, where this reached statistical significance. The study concluded that participants with apraxia of speech presented a working memory deficit and that this was probably related to the articulatory process of the phonoarticulatory loop. Furthermore, all apraxic patients presented a compromise in working memory.

O objetivo do presente estudo foi verificar a interrelação entre memória operacional e apraxia verbal e explorar quais os componentes desta memória estariam envolvidos na programação motora da fala. Foram avaliados 22 pacientes apráxicos e 22 controles. Todos os participantes foram submetidos a avaliação da apraxia de fala. Para investigar a memória operacional, foram aplicados o teste de span de dígitos na ordem direta e inversa, um teste de repetição de palavras longas e curtas e o Rey Auditory Verbal Learning Test, que investiga, além da alça articulatória, o buffer episódico. O desempenho dos apráxicos em todos os testes de memória foi estatisticamente significante mais baixo que o desempenho dos controles. Concluímos que indivíduos com apraxia apresentam um déficit na memória operacional e que este déficit está mais relacionado ao processo articulatório da alça fonoarticulatória.
Keywords memory
working memory
speech production
motor planning of speech
apraxia
apraxia of speech
memória
memória operacional
programação motora da fala
apraxia
apraxia verbal
Language English
Date 2009-09-01
Published in Arquivos de Neuro-Psiquiatria. Academia Brasileira de Neurologia - ABNEURO, v. 67, n. 3b, p. 843-848, 2009.
ISSN 0004-282X (Sherpa/Romeo, impact factor)
Publisher Academia Brasileira de Neurologia - ABNEURO
Extent 843-848
Origin http://dx.doi.org/10.1590/S0004-282X2009000500012
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000270941600012
SciELO ID S0004-282X2009000500012 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/5229

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