Task-Related Vigilance During Word Recognition in Noise for Older Adults with Hearing Loss.
Background/Study Context: Vigilance refers to the ability to sustain and adapt attentional focus in response to changing task demands. For older adults with hearing loss, vigilant listening may be particularly effortful and variable across individuals. This study examined the extent to which neural...
| Published in: | Experimental Aging Research Vol. 42; no. 1; pp. 64 - 86 |
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| Main Authors: | , , , , , , |
| Format: | diagnostic images pictorial research tables/charts Journal Article |
| Published: |
Taylor & Francis Ltd
Jan/Feb2016
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=111871272&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 111871272 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 0361073X 1HO jtl: Experimental Aging Research issn: 0361073X maglogo: N pubinfo: dt: Jan/Feb2016 vid: 42 iid: 1 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 111871272 111871272 111871272 10.1080/0361073X.2016.1108712 111871272 ppf: 64 ppct: 22 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Task-Related Vigilance During Word Recognition in Noise for Older Adults with Hearing Loss. aug: au: Kuchinsky, Stefanie E. Vaden, Kenneth I. Ahlstrom, Jayne B. Cute, Stephanie L. Humes, Larry E. Dubno, Judy R. Eckert, Mark A. affil: Center for Advanced Study of Language, University of Maryland, College Park, Maryland, USA sug: subj: Attention Evaluation Listening Hearing Loss, Partial Noise Human Magnetic Resonance Imaging Methods Task Performance and Analysis Middle Age Aged Aged, 80 and Over Reaction Time Reflex, Pupillary Evaluation P-Value Male Female Audiometry Descriptive Statistics Data Analysis Software Middle Aged: 45-64 years Aged: 65+ years Aged, 80 & over Male Female ab: Background/Study Context: Vigilance refers to the ability to sustain and adapt attentional focus in response to changing task demands. For older adults with hearing loss, vigilant listening may be particularly effortful and variable across individuals. This study examined the extent to which neural responses to sudden, unexpected changes in task structure (e.g., from rest to word recognition epochs) were related to pupillometry measures of listening effort. Methods: Individual differences in the task-evoked pupil response during word recognition were used to predict functional magnetic resonance imaging (MRI) estimates of neural responses to salient transitions between quiet rest, noisy rest, and word recognition in unintelligible, fluctuating background noise. Participants included 29 older adults (M = 70.2 years old) with hearing loss (pure tone average across all frequencies = 36.1 dB HL [hearing level], SD = 6.7). Results: Individuals with a greater average pupil response exhibited a more vigilant pattern of responding on a standardized continuous performance test (response time variability across varying interstimulus intervals r(27) =.38, p =.04). Across participants there was widespread engagement of attention- and sensory-related cortices in response to transitions between blocks of rest and word recognition conditions. Individuals who exhibited larger task-evoked pupil dilation also showed even greater activity in the right primary auditory cortex in response to changes in task structure. Conclusion: Pupillometric estimates of word recognition effort predicted variation in activity within cortical regions that were responsive to salient changes in the environment for older adults with hearing loss. The results of the current study suggest that vigilant attention is increased amongst older adults who exert greater listening effort. pubtype: Academic Journal doctype: diagnostic images pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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