Behavioral and fMRI evidence that cognitive ability modulates the effect of semantic context on speech intelligibility
2012 (English)In: Brain and Language, ISSN 0093-934X, E-ISSN 1090-2155, ISSN 0093-934X, Vol. 122, no 2, 103-113 p.Article in journal (Refereed) Published
Text cues facilitate the perception of spoken sentences to which they are semantically related (Zekveld, Rudner, et al., 2011). In this study, semantically related and unrelated cues preceding sentences evoked more activation in middle temporal gyrus (MTG) and inferior frontal gyrus (IFG) than nonword cues, regardless of acoustic quality (speech in noise or speech in quiet). Larger verbal working memory (WM) capacity (reading span) was associated with greater intelligibility benefit obtained from related cues, with less speech-related activation in the left superior temporal gyrus and left anterior IFG, and with more activation in right medial frontal cortex for related versus unrelated cues. Better ability to comprehend masked text was associated with greater ability to disregard unrelated cues, and with more activation in left angular gyrus (AG). We conclude that individual differences in cognitive abilities are related to activation in a speech-sensitive network including left MTG, IFG and AG during cued speech perception.
Place, publisher, year, edition, pages
Elsevier , 2012. Vol. 122, no 2, 103-113 p.
fMRI, Spoken sentence perception, Text cues, Working memory
IdentifiersURN: urn:nbn:se:liu:diva-81504DOI: 10.1016/j.bandl.2012.05.006ISI: 000307262800004OAI: oai:DiVA.org:liu-81504DiVA: diva2:553102
Funding Agencies|Swedish Research Council||2012-09-182012-09-182015-04-16