Working memory capacity mediates the facilitative effect of semantically related cues on the intelligibilityof speech in noise
2013 (English)Conference paper, Poster (Other academic)
This study assessed the influence of masker type, working memory capacity (reading span and size comparison span) and linguistic closure ability (text reception threshold) on the benefit obtained from semantically related text cues during perception of speech in noise. Sentences were masked by stationary noise, fluctuating noise, or an interfering talker. Each sentence was preceded by three text cues that were either words that were semantically related to the sentence or unpronounceable nonwords. Speech perception thresholds were adaptively measured and delayed sentence recognition was subsequently assessed. Word cues facilitated speech perception in noise. The amount of benefit did not depend on masker type, but benefit correlated with reading span when speech was masked by interfering speech. Cue benefit was not related to reading span when other maskers were used and did not correlate with the text reception threshold or size comparison span. Larger working-memory capacity was furthermore associated with enhanced delayed recall of sentences preceded by word cues relative to nonword cues. This suggests that working memory capacity may be associated with release from informational masking by semantically related information, with keeping the cues in mind while disambiguating the sentence and for encoding of speech content into long-term memory.
Place, publisher, year, edition, pages
2013. 169- p.
IdentifiersURN: urn:nbn:se:liu:diva-103056OAI: oai:DiVA.org:liu-103056DiVA: diva2:686455
Second International Conference on Cognitive Hearing and Science for Communication, Linköping University, Sweden, 16-19 June 2013