Dynamic relation between working memory capacity and speech recognition in noise during the first six months of hearing aid use
2014 (English)In: Trends in Hearing, ISSN 2331-2165, Vol. 18, 1-10 p.Article in journal (Refereed) Published
The present study aimed to investigate the changing relationship between aided speech recognition and cognitive function during the first six months of hearing aid use. Twentyseven first-time hearing aid users with symmetrical mild to moderate sensorineural hearing loss were recruited. Aided speech recognition thresholds in noise (SRTs) were obtained in the hearing aid fitting session as well as at three and six months post-fitting. Cognitive abilities were assessed using a reading span test, which is a measure of working memory capacity, and a cognitive test battery. Results showed a significant correlation between reading span and SRT during the hearing aid fitting session. This relation was significantly weakened over the first six months of hearing aid use. Multiple regression analysis showed that reading span was the main predictor of SRT when hearing aids were first fitted, but that pure-tone average hearing threshold (PTA) was the main predictor six months later. This indicates that working memory capacity plays a more important role in speech recognition in noise before than after six months of use. We argue that new hearing aid users engage working memory capacity to recognize unfamiliar processed speech signals but that as familiarization proceeds, engagement of working memory capacity is reduced.
Place, publisher, year, edition, pages
Sage Publications, 2014. Vol. 18, 1-10 p.
Speech recognition, cognitive abilities, working memory, acclimatization, hearing aid
Health Sciences Other Social Sciences
IdentifiersURN: urn:nbn:se:liu:diva-98285DOI: 10.1177/2331216514558688ISI: 000354484700002OAI: oai:DiVA.org:liu-98285DiVA: diva2:653995