Evidence map›Paper›PMID 32273536›Full record

ArticleScientific reports2020

Poor early cortical differentiation of speech predicts perceptual difficulties of severely hearing-impaired listeners in multi-talker environments.

Brandon T Paul, Mila Uzelac, Emmanuel Chan, Andrew Dimitrijevic

Abstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
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

16 citing papers in PubMed.

  1. Longitudinal adaptations in neural and behavioral systems following hearing restoration using cochlear implants.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  7. Spectral Grouping of Electrically Encoded Sound Predicts Speech-in-Noise Performance in Cochlear Implantees.Journal of the Association for Research in Otolaryngology : JARO · 2023
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  13. Continuous speech processing.Current opinion in physiology · 2020
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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

4 authors.

Brandon T PaulEvaluative Clinical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, M4N 3M5, Canada. brandon.paul@utoronto.ca.
Mila UzelacEvaluative Clinical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, M4N 3M5, Canada.
Emmanuel ChanEvaluative Clinical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, M4N 3M5, Canada.
Andrew DimitrijevicEvaluative Clinical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, M4N 3M5, Canada. andrew.dimitrijevic@sunnybrook.ca.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hearing impairment disrupts processes of selective attention that help listeners attend to one sound source over competing sounds in the environment. Hearing prostheses (hearing aids and cochlear implants, CIs), do not fully remedy these issues. In normal hearing, mechanisms of selective attention arise through the facilitation and suppression of neural activity that represents sound sources. However, it is unclear how hearing impairment affects these neural processes, which is key to understanding why listening difficulty remains. Here, severely-impaired listeners treated with a CI, and age-matched normal-hearing controls, attended to one of two identical but spatially separated talkers while multichannel EEG was recorded. Whereas neural representations of attended and ignored speech were differentiated at early (~ 150 ms) cortical processing stages in controls, differentiation of talker representations only occurred later (~250 ms) in CI users. CI users, but not controls, also showed evidence for spatial suppression of the ignored talker through lateralized alpha (7-14 Hz) oscillations. However, CI users' perceptual performance was only predicted by early-stage talker differentiation. We conclude that multi-talker listening difficulty remains for impaired listeners due to deficits in early-stage separation of cortical speech representations, despite neural evidence that they use spatial information to guide selective attention.

Indexed as

AdolescentAdultAgedAttentionCase-Control StudiesCerebral CortexCochlear ImplantsElectroencephalographyHearing LossHumansMaleMiddle AgedSpeechSpeech PerceptionYoung Adult

Identifiers

PMID32273536
PMCPMC7145807

What OpenQuestion holds

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Registered trials

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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.