Evidence map›Paper›PMID 31479953›Full record

ArticleHearing research2019

Afferent-efferent connectivity between auditory brainstem and cortex accounts for poorer speech-in-noise comprehension in older adults.

Gavin M Bidelman, Caitlin N Price, Dawei Shen, Stephen R Arnott, Claude Alain

Open access · greenAbstract read
In one paragraph

Article in Hearing research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
4.0field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 50 citations in OpenAlex.

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  12. Difference in Network Effects of Pulsatile and Galvanic Stimulation.Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 4 institutions in 2 countries.

Gavin M BidelmanSchool of Communication Sciences & Disorders, University of Memphis, Memphis, TN, USA; Institute for Intelligent Systems, University of Memphis, Memphis, TN, USA; University of Tennessee Health Sciences Center, Department of Anatomy and Neurobiology, Memphis, TN, USA. Electronic address: gmbdlman@memphis.edu.
Caitlin N PriceSchool of Communication Sciences & Disorders, University of Memphis, Memphis, TN, USA.
Dawei ShenRotman Research Institute-Baycrest Centre for Geriatric Care, Toronto, Ontario, Canada.
Stephen R ArnottRotman Research Institute-Baycrest Centre for Geriatric Care, Toronto, Ontario, Canada.
Claude AlainRotman Research Institute-Baycrest Centre for Geriatric Care, Toronto, Ontario, Canada; University of Toronto, Department of Psychology, Toronto, Ontario, Canada; University of Toronto, Institute of Medical Sciences, Toronto, Ontario, Canada.
Baycrest Hospital · CAUniversity of Memphis · USUniversity of Tennessee Health Science Center · USUniversity of Toronto · CA

Funding

Neuroimaging biomarkers of speech processing deficits in MCIR01DC016267 · NIDCD · UNIVERSITY OF MEMPHIS · PI BIDELMAN, GAVIN M. · 2018 to 2022
$2.1M
NIDCD NIH HHS R01 DC016267
6 · The paper itself

Abstract

Speech-in-noise (SIN) comprehension deficits in older adults have been linked to changes in both subcortical and cortical auditory evoked responses. However, older adults' difficulty understanding SIN may also be related to an imbalance in signal transmission (i.e., functional connectivity) between brainstem and auditory cortices. By modeling high-density scalp recordings of speech-evoked responses with sources in brainstem (BS) and bilateral primary auditory cortices (PAC), we show that beyond attenuating neural activity, hearing loss in older adults compromises the transmission of speech information between subcortical and early cortical hubs of the speech network. We found that the strength of afferent BS→PAC neural signaling (but not the reverse efferent flow; PAC→BS) varied with mild declines in hearing acuity and this "bottom-up" functional connectivity robustly predicted older adults' performance in a SIN identification task. Connectivity was also a better predictor of SIN processing than unitary subcortical or cortical responses alone. Our neuroimaging findings suggest that in older adults (i) mild hearing loss differentially reduces neural output at several stages of auditory processing (PAC > BS), (ii) subcortical-cortical connectivity is more sensitive to peripheral hearing loss than top-down (cortical-subcortical) control, and (iii) reduced functional connectivity in afferent auditory pathways plays a significant role in SIN comprehension problems.

Indexed as

ComprehensionPerceptual MaskingSpeech IntelligibilitySpeech PerceptionAgedAge FactorsAgingAuditory CortexAuditory PathwaysBrain StemEfferent PathwaysElectroencephalographyEvoked Potentials, Auditory, Brain StemFemaleHumansMaleAgingAuditory cortexAuditory evoked potentialsFrequency-following response (FFR)Functional connectivityNeural speech processingSource waveform analysis

Identifiers

PMID31479953
PMCPMC6778515
OpenAlexW2970376271

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.