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Original Article

Performance in children with hearing aids or cochlear implants: Bilateral stimulation and binaural hearing

Rendimiento en niños con auxiliares auditivos o implantes cocleares: estimulación bilateral y audición binaural

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Pages 108-112 | Published online: 07 Jul 2009
 

Abstract

It is well recognised that normal hearing people use their hearing in both ears to locate sounds and to understand speech in complex listening conditions. Whereas it is standard practice to provide two hearing aids to children with bilateral hearing loss, the situation with cochlear implantation is less certain. Questions remain as to what binaural aided functioning is possible for children who use a hearing aid and a cochlear implant in opposite ears (bimodal hearing). The first part of this paper draws on research at the National Acoustic Laboratories to show that children who used bimodal hearing devices obtained binaural advantages in localization. They could also take advantage of head shadow and binaural redundancy for speech intelligibility. The second part presents data showing that some hearing-impaired children may have binaural processing deficits even when bilateral stimulation is provided. Additional strategies may be necessary to develop or enable the use of binaural cues by these children.

Sumario

Es bien sabido que los normo-oyentes usan la audición de sus dos oídos para localizar sonidos y para entender el lenguaje en condiciones de audición complejas. Mientras que es una práctica normal adaptar dos auxiliares auditivos (AA) a niños con pérdidas bilaterales, la situación con los implantes cocleares (IC) es menos obvia. Permanecen preguntas como la que se refiere a si el funcionamiento binaural asistido es posible en niños que usan AA e IC en oídos opuestos (modo bimodal). La primera parte de este trabajo delinea las investigaciones de los Laboratorios Nacionales de Acústica, para mostrar que los niños que usan instrumentos auditivos bimodales obtienen ventajas binaurales en la localización. La segunda parte presenta los datos que muestran que algunos niños hipoacúsicos pueden tener déficit de procesamiento binaural, incluso cuando son sujetos de estimulación bilateral. Serán necesarias estrategias adicionales para desarrollar y permitir que estos niños usen claves binaurales.

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