Dichotic sentence identification test in Portuguese: a study in young adults
Teste de reconhecimento de sentenças dicóticas em português: estudo em adultos jovens
Braz. j. otorhinolaryngol. (Impr.); 87 (4), 2021
Publication year: 2021
Abstract Introduction Among the currently-applied auditory processing tests, dichotic listening tests have been widely used, since they allow investigating the hemispheric and inter-hemispheric function and their respective skills to process the received auditory information. Objective To obtain normality reference measures with the new dichotic sentence identification test in right-handed adults with normal hearing. Methods Quantitative, observational, cross-sectional study. 72 subjects were assessed, aged 19-44 years, right-handed, with normal hearing, without hearing complaints. The dichotic sentence identification test consists of different lists of sentences, which were combined two by two and presented at the same time, using earphones in both ears, at 50 dB Sensation Level.
The test was applied in four stages:
training of the 3 stages, free attention, right and left directed attention, thus evaluating different auditory skills. Results In the free attention task, the average percentage of correct answers in the right ear was 93.59% and in the left ear 86.06%, with a statistically significant difference between the ears, with an advantage for the right ear. In the directed attention task, the average percentage of correct answers was 99.37% in the right ear and 98.8% in the left ear, with no statistical difference between the ears. Conclusion It is suggested, as a normality reference for the stage of free attention, 90%-100% for correct answers for the right ear and for the left ear, from 80% to 100%. When there is asymmetry between the ears, differences of up to 20% are expected, with an advantage for the right ear For the directed attention stage, the expected normality reference values are 100% for the right ear and for the left ear, with no asymmetry between the ears; however, if it occurs, a difference of 10% is expected between the ears, with an advantage for the right ear.
Resumo Introdução Entre os testes de processamento auditivo aplicados atualmente, os testes de escuta dicótica têm sido amplamente usados, uma vez que permitem investigar a função hemisférica e inter-hemisférica e suas respectivas habilidades, para processar a informação auditiva recebida. Objetivo Obter medidas de referência de normalidade com o novo teste dicótico de reconhecimento de sentenças em indivíduos adultos, destros, com audição normal. Método Estudo quantitativo, observacional, de corte transversal. Foram avaliados 72 indivíduos, entre 19 e 44 anos, destros, com audição normal, sem queixa auditiva. O teste dicótico de reconhecimento de sentenças é constituído por diferentes listas de sentenças, que foram combinadas duas a duas e apresentadas ao mesmo tempo, por meio de fones auriculares em ambas as orelhas, a 50 dB nível de sensação.