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      Perfil familial da fluência da fala: estudo linguístico, acústico e eletromiográfico Translated title: Speech fluency family profile: a linguistic, acoustic and electromyographic study

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          Abstract

          TEMA: fatores genéticos como possíveis responsáveis pela gagueira. OBJETIVO: identificar o perfil familial da fluência da fala - aspectos linguísticos, eletromiográficos e acústicos - em crianças com e sem história familiar próxima para a gagueira. MÉTODO: participaram do estudo 127 indivíduos, 32 crianças (probandos) e 95 membros da família imediata (pai, mãe, irmãs e irmãos) divididos em dois grupos: GI (CCG): 17 probandos com diagnóstico de gagueira; 17 pais, 17 mães, 10 irmãos e 13 irmãs; e GII (CSG): 15 probandos fluentes; 15 pais, 15 mães, 0 irmãos e 8 irmãs. Todos os procedimentos de testagem foram aplicados em todos os participantes: 1. Coleta das tipologias das rupturas; 2. Coleta eletromiográfica; 3. Coleta acústica. RESULTADOS: foi encontrado o percentual de 41,1% de mães afetadas; 35,3% de pais afetados; 16,7% de irmãs afetadas e 40 % de irmãos afetados. Foi observada similaridade na tipologia das rupturas da fala em todos os afetados de uma mesma família, mesmo havendo uma tendência a maior gravidade do distúrbio nos probandos. Foi encontrada similaridade na ativação muscular para as taxas de diadococinesia em todos os afetados de uma mesma família. Sugere-se um padrão motor para a fala, numa relação passível de ser mensurada pala captação da ativação muscular periférica, dentro de uma mesma família. Foi encontrada similaridade na variação acústica para as taxas de diadococinesia em todos os afetados de uma mesma família. CONCLUSÃO: esta pesquisa se caracteriza como uma primeira proposta de estudo endofenotípico da gagueira, em dois aspectos: critérios objetivos de inclusão e tipo de sintomatologia manifesta da gagueira.

          Translated abstract

          BACKGROUND: genetic factors as a possible cause of stuttering. AIM: to identify the speech fluency family profile (linguistic, electromyographic and acoustic aspects) in children with and without a close family history of stuttering. METHOD: the study included a total of 127 individuals, 32 children (probands) and 95 members of the immediate family (father, mother, sisters and brothers). The individuals were divided in two groups: GI (SC) was composed of 17 probands with a diagnosis of stuttering, 17 fathers, 17 mothers, 10 brothers, and 13 sisters, and GII (NSC) was composed of 15 fluent probands, 15 fathers, 15 mothers, no brothers, and 8 sisters. All testing procedures were applied to all participants as follows: 1) identification of disruption typology; 2) electromyographic analyses; and 3) acoustic analyses. RESULTS: the percentage of affected mothers was 41.1%, and the percentage of affected fathers was 35.3%. In addition, the percentage of affected sisters was 6.7%, and 40% of the brothers were affected. Similarity was observed in the typology of speech disruptions in all of the affected individuals of the same family; however, a trend towards a greater severity of the disorder in probands was observed. Similarity was found in muscle activation for diadochokinesia rates in all the affected individuals in the same family. This suggests the existence of a speech motor pattern within the same family that can be measured by capturing peripheral muscle activation. Similarity was found in the acoustic variation for diadochokinetic rates in all affected individuals of the same family. CONCLUSION: this study represents one of the first endophenotypic research proposals on stuttering characterized by two aspects: objective inclusion criteria and the type of stuttering symptomatology manifested.

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          Most cited references35

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          A stuttering severity instrument for children and adults.

          Lisa Riley (1972)
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            Incipient and developed stuttering as two distinct disorders: resolving a dilemma

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                Author and article information

                Contributors
                Role: ND
                Journal
                pfono
                Pró-Fono Revista de Atualização Científica
                Pró-Fono R. Atual. Cient.
                Pró-Fono Produtos Especializados para Fonoaudiologia Ltda. (Barueri )
                0104-5687
                September 2010
                : 22
                : 3
                : 169-174
                Affiliations
                [1 ] Universidade de São Paulo Brazil
                Article
                S0104-56872010000300003
                10.1590/S0104-56872010000300003
                b9b766ea-fef6-4dd0-b1d6-f2d89f45ce94

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0104-5687&lng=en
                Categories
                AUDIOLOGY & SPEECH-LANGUAGE PATHOLOGY
                REHABILITATION

                Audiology,Physiotherapy
                Speech,Language and Hearing Sciences,Stuttering,Genetics,Fonoaudiologia,Gagueira,Genética

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