Journal article
EXPRESS: Engaging effort improves efficiency for spoken word recognition in cochlear implant users
Quarterly journal of experimental psychology (2006)
02/20/2025
DOI: 10.1177/17470218251325145
PMID: 39980137
Abstract
Word recognition is generally thought to be supported by an automatic process of lexical competition, at least in normal hearing young adults. When listening becomes challenging, either due to properties of the environment (noise) or the individual (hearing loss), the dynamics of lexical competition change and word recognition can feel effortful and fatiguing. In cochlear implant users, several dimensions of lexical competition have been identified that capture the timing of the onset of lexical competition (Wait-and-See), the degree to which competition is fully resolved (Sustained Activation), and how quickly lexical candidates are activated (Activation Rate). It is unclear, however, how these dimensions relate to listening effort. To address this question, a group of cochlear implant users (N=79) completed a pupillometry task to index effort and a visual world paradigm task to index the dynamics of lexical competition as part of a larger battery of clinical and experimental tasks. Listeners who engaged more effort, as indexed by peak pupil size difference score, fell lower along the Wait-and-See dimension, suggesting that these listeners are engaging effort to be less Wait-and-See (or to begin the process of lexical competition earlier). Listeners who engaged effort earlier had better word and sentence recognition outcomes. The timing of effort was predicted by age and spectral fidelity, but no audiological or demographic factors predicted peak pupil size difference. The dissociation between the magnitude of engaged effort and the timing of effort suggests they perform different goals for spoken word recognition.
Details
- Title: Subtitle
- EXPRESS: Engaging effort improves efficiency for spoken word recognition in cochlear implant users
- Creators
- Sarah E Colby - University of IowaBob McMurray - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Quarterly journal of experimental psychology (2006)
- Publisher
- SAGE PUBLICATIONS LTD
- DOI
- 10.1177/17470218251325145
- PMID
- 39980137
- ISSN
- 1747-0226
- eISSN
- 1747-0226
- Grant note
- NIH: P50 000242, R01 DC008089
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by NIH Grant P50 000242 awarded to Bruce Gantz and Bob McMurray and by R01 DC008089 awarded to Bob McMurray.
- Language
- English
- Electronic publication date
- 02/20/2025
- Academic Unit
- Communication Sciences and Disorders; Linguistics; Psychological and Brain Sciences; Iowa Neuroscience Institute; Otolaryngology
- Record Identifier
- 9984790992502771
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