Journal article
Underlying dimensions of real-time word recognition in cochlear implant users
Nature communications, Vol.15(1), 7382
01/01/2024
DOI: 10.1038/s41467-024-51514-3
PMCID: PMC11362525
PMID: 39209837
Abstract
Word recognition is a gateway to language, linking sound to meaning. Prior work has characterized its cognitive mechanisms as a form of competition between similar-sounding words. However, it has not identified dimensions along which this competition varies across people. We sought to identify these dimensions in a population of cochlear implant users with heterogenous backgrounds and audiological profiles, and in a lifespan sample of people without hearing loss. Our study characterizes the process of lexical competition using the Visual World Paradigm. A principal component analysis reveals that people’s ability to resolve lexical competition varies along three dimensions that mirror prior small-scale studies. These dimensions capture the degree to which lexical access is delayed (“Wait-and-See”), the degree to which competition fully resolves (“Sustained-Activation”), and the overall rate of activation. Each dimension is predicted by a different auditory skills and demographic factors (onset of deafness, age, cochlear implant experience). Moreover, each dimension predicts outcomes (speech perception in quiet and noise, subjective listening success) over and above auditory fidelity. Higher degrees of Wait-and-See and Sustained-Activation predict poorer outcomes. These results suggest the mechanisms of word recognition vary along a few underlying dimensions which help explain variable performance among listeners encountering auditory challenge.People recognize a word by resolving competition between similar sounding words as it unfolds over time. Here, the authors use the visual world paradigm in cochlear implant users to characterize the dimensionality of individual differences in how people resolve such lexical competition.
Details
- Title: Subtitle
- Underlying dimensions of real-time word recognition in cochlear implant users
- Creators
- Bob McMurray - University of IowaFrancis X Smith - University of Iowa, OtolaryngologyMarissa Huffman - University of IowaKristin Rooff - University of Iowa, OtolaryngologyJohn B Muegge - University of IowaCharlotte Jeppsen - University of IowaEthan Kutlu - University of IowaSarah Colby - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Nature communications, Vol.15(1), 7382
- Publisher
- Nature Publishing Group
- DOI
- 10.1038/s41467-024-51514-3
- PMID
- 39209837
- PMCID
- PMC11362525
- eISSN
- 2041-1723
- Language
- English
- Date published
- 01/01/2024
- Academic Unit
- Communication Sciences and Disorders; Linguistics; Psychological and Brain Sciences; Iowa Neuroscience Institute; Center for Social Science Innovation; Otolaryngology
- Record Identifier
- 9984699518302771
Metrics
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