Audiovisual presentation supports cognitive processing of information heard in modulated noise
2013 (English)Conference paper, Abstract (Other academic)
The cognitive spare capacity test (CSCT) assesses the ability to process heard information stored in working memory. This is important because listening that is effortful, due to noise or hearing impairment, consumes cognitive resources leaving less capacity available for further processing. The CSCT pinpoints the effects of modality of presentation (Audiovisual, Audio-only); memory load (High, Low) and different kinds of executive processing demands (Updating, Inhibition). In the present study, 24 participants with mild to moderate hearing loss performed CSCT with amplification in quiet, in steady-state noise at an individually adapted signal to noise ratio (SNR) rendering intelligibility of ~95% and in modulated noise (International Speech Test Signal; ISTS) at the same SNR. An independent battery of cognitive tests was also administered. Analysis of variance showed main effects of all factors, including better performance with Audiovisual than Audio-only modality. However, a significant interaction revealed that the Audiovisual benefit was most prominent in ISTS. The benefit of Audiovisual presentation over Audio-only presentation correlated with the independent measure of working memory capacity. The pattern of results suggests that for the hearing impaired population, Audiovisual presentation supports cognitive processing of information heard in modulated noise and that the magnitude of this benefit is related to working memory capacity.
Place, publisher, year, edition, pages
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-96599OAI: oai:DiVA.org:liu-96599DiVA: diva2:642385
Second International Conference on Cognitive Hearing science for Communication, Linköping,June 16-19, Sweden.