Audiovisual presentation supports cognitive processing of information heard in modulated noise
2013 (English)Conference paper, Abstract (Refereed)
The cognitive spare capacity test (CSCT) assesses the ability to process heardinformation stored in working memory. This is important because listening that iseffortful, due to noise or hearing impairment, consumes cognitive resources leavingless capacity available for further processing. The CSCT pinpoints the effectsof modality of presentation (Audiovisual, Audio-only); memory load (High, Low)and different kinds of executive processing demands (Updating, Inhibition). Inthe present study, 24 participants with mild to moderate hearing loss performedCSCT with amplification in quiet, in steady-state noise at an individually adaptedsignal to noise ratio (SNR) rendering intelligibility of ~95% and in modulatednoise (International Speech Test Signal; ISTS) at the same SNR. An independentbattery of cognitive tests was also administered. Analysis of variance showedmain effects of all factors, including better performance with Audiovisual thanAudio-only modality. However, a significant interaction revealed that the Audiovisualbenefit was most prominent in ISTS. The benefit of Audiovisual presentationover Audio-only presentation correlated with the independent measure of workingmemory capacity. The pattern of results suggests that for the hearing impairedpopulation, Audiovisual presentation supports cognitive processing of informationheard in modulated noise and that the magnitude of this benefit is related toworking memory capacity.
Place, publisher, year, edition, pages
2013. 30-30 p.
IdentifiersURN: urn:nbn:se:liu:diva-94731OAI: oai:DiVA.org:liu-94731DiVA: diva2:634731
Second International Conference on Cognitive Hearing Science for Communication, 16-19 June 2013, Linköping Sweden