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Original Articles

Phonological mismatch and explicit cognitive processing in a sample of 102 hearing-aid users

, , , &
Pages S91-S98 | Received 26 Jun 2008, Published online: 07 Jul 2009
 

Abstract

Rudner et al (Citation) showed that when compression release settings are manipulated in the hearing instruments of Swedish habitual users, the resulting mismatch between the phonological form of the input speech signal and representations stored in long-term memory leads to greater engagement of explicit cognitive processing under taxing listening conditions. The mismatch effect is manifest in significant correlations between performance on cognitive tests and aided-speech-recognition performance in modulated noise and/or with fast compression release settings. This effect is predicted by the ELU model (Rönnberg et al, 2008). In order to test whether the mismatch effect can be generalized across languages, we examined two sets of aided speech recognition data collected from a Danish population where two cognitive tests, reading span and letter monitoring, had been administered. A reanalysis of all three datasets, including 102 participants, demonstrated the mismatch effect. These findings suggest that the effect of phonological mismatch, as predicted by the ELU model (Citation et al, this issue) and tapped by the reading span test, is a stable phenomenon across these two Scandinavian languages.

Abbreviations
ELU=

Ease of language understanding

PTA=

Pure tone average

PTALF=

Pure tone average, low to mid frequency

PTAHF=

Pure tone average, high frequency

RAMBPHO=

Rapid automatic multimodal binding of phonology

TFS=

Temporal fine structure

WM=

Working memory

Abbreviations
ELU=

Ease of language understanding

PTA=

Pure tone average

PTALF=

Pure tone average, low to mid frequency

PTAHF=

Pure tone average, high frequency

RAMBPHO=

Rapid automatic multimodal binding of phonology

TFS=

Temporal fine structure

WM=

Working memory

Sumario

Rudner y col. (2008) mostraron que cuando los ajustes de liberación de la compresión eran manipulados en el instrumento auditivo de usuarios suecos habituales, la disparidad resultante entre la forma fonológica de la señal de lenguaje de ingreso y las representaciones almacenadas en la memoria a largo plazo llevan a un mayor compromiso del procesamiento cognitivo explícito, bajo condiciones de exigencia de escucha. El efecto de disparidad se manifiesta en correlaciones significativas entre el desempeño en pruebas cognitivas y el desempeño en reconocimiento de lenguaje amplificado en medio de ruido modulado y/o con ajustes de rápida liberación de la compresión. Este efecto se predice por el modelo ELU (Rönnberg y col, en este ejemplar). Para evaluar si el efecto de disparidad puede ser generalizado en todas las lenguas, examinamos dos grupos de datos de reconocimiento del lenguaje con amplificación, colectados de una población danesa, a la que le administraron dos pruebas cognitivas, una prueba de lapso de lectura y una de monitoreo de letras. Un re-análisis de los tres grupos de datos, incluyendo 102 participantes, demostró el efecto de disparidad. Estos hallazgos sugieren que el efecto de disparidad fonológica, como se predijo con el modelo ELU (Rönnberg y col, en este ejemplar) y afirmado por la prueba de lapso de lectura, es un fenómeno estable entre estas dos lenguas escandinavas.

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