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Original Article

Speech understanding in quiet and noise, with and without hearing aids

Comprensión del lenguaje en silencio y con ruido, con y sin auxiliares auditivos

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Pages 574-583 | Received 10 May 2004, Published online: 07 Jul 2009
 

Abstract

Speech recognition and cognitive functions important for speech understanding were evaluated by objective measures and by scores of perceived effort, with and without hearing aids. The tests were performed in silence, and with background conditions of speech spectrum random noise and ordinary speech. One young and one elderly group of twelve hearing-impaired subjects each participated. Hearing aid use improved speech recognition in silence (7 dB) and in the condition with speech as background (2.5 dB S/N), but did not change the perceived effort scores. In the cognitive tests no hearing aid benefit was seen in objective measures, while there was an effect of hearing aid use in scores of perceived effort, subjects reported less effort. There were no age effects on hearing aid benefit. In conclusion, hearing aid use may result in reduced effort in listening tasks that is not associated with improvement in objective scores.

Sumario

El reconocimiento del lenguaje y las funciones cognitivas importantes para la comprensión del lenguaje se valoraron por medio de mediciones objetivas y con puntuaciones sobre el esfuerzo percibido, con y sin auxiliares auditivos. Las pruebas se aplicaron en silencio y con ruido aleatorio de fondo en el espectro del lenguaje y con lenguaje ordinario. Participaron un grupo de jóvenes y uno de adultos mayores, de 12 personas hipoacúsicas cada uno. El auxiliar auditivo mejoró el reconocimiento del lenguaje en silencio (7 dB) y en la condición de lenguaje de fondo (2.5 dB S/N) pero no cambió las puntuaciones de esfuerzo percibidas. En las pruebas cognitivas no se apreciaron beneficios con el auxiliar auditivo con medidas objetivas, mientras que si hubo un efecto del uso del auxiliar auditivo en las puntuaciones de esfuerzo percibido, al reportar los sujetos un menor esfuerzo. No existieron efectos de la edad en el beneficio del auxiliar auditivo. En conclusión, el uso del auxiliar auditivo puede resultar en un esfuerzo reducido para las tareas de atención que no se asocian con la mejoría de las puntuaciones objetivas.

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