Abstract
Cortical dynamics of word-in-noise recognition
The Journal of the Acoustical Society of America, Vol.146(4), pp.3048-3048
10/2019
DOI: 10.1121/1.5137565
Abstract
Understanding speech in background noise is a crucial function for communication. Despite the growing body of research on this topic, it is still unexplained how the neural processes for spoken-word recognition are affected by the acoustic degradation of target speech. To address this question, we utilized high-density EEG simultaneously measured during a word identification task with varying levels of background noise. We hypothesize that, if background noise degrades speech sound, listeners will exhibit less immediate processing of speech information, waiting to access lexical entries until most of the word has been heard. We showed that, as we hypothesized, in the more difficult lower-SNR condition, cortical evoked response to target word is weaker in the auditory cortex while the induced and evoked responses from the inferior frontal cortex are delayed but greater, which may imply delayed lexical processing. This study elucidates what neural mechanisms underly effortful speech understanding in challenging acoustic conditions.
Details
- Title: Subtitle
- Cortical dynamics of word-in-noise recognition
- Creators
- Inyong Choi - University of IowaSubong Kim - University of IowaAdam Schwalje - University of IowaJihwan Woo - University of Ulsan
- Resource Type
- Abstract
- Publication Details
- The Journal of the Acoustical Society of America, Vol.146(4), pp.3048-3048
- DOI
- 10.1121/1.5137565
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Number of pages
- 1
- Date published
- 10/2019
- Academic Unit
- Communication Sciences and Disorders; Iowa Neuroscience Institute; Otolaryngology
- Record Identifier
- 9984267725602771
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