Mismatch negativity e percepção auditiva em crianças usuárias de implante coclear
Data
2018-02-22
Tipo
Dissertação de mestrado
Título da Revista
ISSN da Revista
Título de Volume
Resumo
Objetivo: Identificar as características do MMN em relação à latência, amplitude, e
área da onda, em crianças com idade entre dois e oito anos, usuárias de implante
coclear e em terapia fonoaudiológica e identificar associações com as variáveis
desenvolvimento da linguagem, percepção de fala e envolvimento familiar. Método:
estudo de caráter observacional, descritivo, transversal, com comparação entre
grupos: grupo estudo crianças
com implante coclear, e grupo controle crianças
ouvintes. As crianças foram submetidas à avaliação eletrofisiológica MMN
com
estímulo não verbal tone burst diferindo quanto à frequência (estímulo frequente
1000Hz e estímulo raro 1500Hz), em campo sonoro à 70dBNA, utilizando
equipamento SMARTEP.
Foram aplicados questionários de percepção de fala e de
desenvolvimento de linguagem, selecionados de acordo com a idade e realizada a
classificação da participação familiar no processo terapêutico. Resultados: a
ocorrência do MMN para o grupo controle foi de 73,3% e para o grupo estudou foi de
53,3%. Observouse
que os valores de latência, amplitude e área do MMN das
crianças usuárias de implante coclear foram similares ao das crianças ouvintes, não
diferindo entre os grupos. A ocorrência do MMN não se correlacionou às variáveis
de categorias de audição, linguagem e família. Conclusão: As crianças com
implante coclear e em terapia fonoaudiológica apresentaram respostas do MMN
semelhantes às crianças ouvintes, com média de latência, amplitude e área de,
respectivamente, 208,9ms (±12,8), 2,37μV
(±0,38) e 86,5μVms (±23,4). Não houve
correlação entre a presença do MMN e o desempenho das crianças nos testes que
avaliaram o desenvolvimento auditivo, de linguagem e participação da família na
reabilitação.
Aim: To identify MMN characteristics regarding latency, amplitude, and wave area in cochlear implanted children who underwent speech therapy, aging between two and eight years old, and to identify associations among language development, speech perception and family involvement in rehabilitation process with the MMN. Method: Descriptive, crosssectional study between groups: study group children with cochlear implant, and control group hearing children. Children were submitted to electrophysiological evaluation MMN with nonverbal tone burst stimulus differing in frequency (frequent stimulus 1000Hz and rare stimulus 1500Hz), in sound field at 70dBHL, using SMARTEP equipment. Speech perception and language development questionnaires, selected according to age, and the classification of family participation in rehabilitation process were also applied. Results: The occurrence of MMN for the control group was 73.3% and for the study group was 53.3%. Values of latency, amplitude and area of MMN of children using cochlear implants were similar to those of hearing children and did not differ between groups. The occurrence of MMN was not correlated to the variables of hearing, language and family categories. Conclusion: Children with cochlear implants who underwent speechlanguage therapy showed similar MMN responses to the hearing children group, with mean latency, amplitude and area of, respectively, 208.9ms (± 12.8), 2.37μV (± 0, 38) and 86.5μVms (± 23.4). There was no correlation between the presence of MMN and the performance in the tests of auditory development, language and family engagement in rehabilitation.
Aim: To identify MMN characteristics regarding latency, amplitude, and wave area in cochlear implanted children who underwent speech therapy, aging between two and eight years old, and to identify associations among language development, speech perception and family involvement in rehabilitation process with the MMN. Method: Descriptive, crosssectional study between groups: study group children with cochlear implant, and control group hearing children. Children were submitted to electrophysiological evaluation MMN with nonverbal tone burst stimulus differing in frequency (frequent stimulus 1000Hz and rare stimulus 1500Hz), in sound field at 70dBHL, using SMARTEP equipment. Speech perception and language development questionnaires, selected according to age, and the classification of family participation in rehabilitation process were also applied. Results: The occurrence of MMN for the control group was 73.3% and for the study group was 53.3%. Values of latency, amplitude and area of MMN of children using cochlear implants were similar to those of hearing children and did not differ between groups. The occurrence of MMN was not correlated to the variables of hearing, language and family categories. Conclusion: Children with cochlear implants who underwent speechlanguage therapy showed similar MMN responses to the hearing children group, with mean latency, amplitude and area of, respectively, 208.9ms (± 12.8), 2.37μV (± 0, 38) and 86.5μVms (± 23.4). There was no correlation between the presence of MMN and the performance in the tests of auditory development, language and family engagement in rehabilitation.
Descrição
Citação
FERNANDES, Natália Martinez Mismatch negativity e percepção auditiva em crianças usuárias de implante coclear. 2018. 80 f. Dissertação (Mestre em Distúrbios da Comunicação Humana) - Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, 2018.