Evidence map›Paper›PMID 27220769›Full record

ArticleJournal of the Association for Research in Otolaryngology : JARO2016

Two Ears Are Not Always Better than One: Mandatory Vowel Fusion Across Spectrally Mismatched Ears in Hearing-Impaired Listeners.

Lina A J Reiss, Jessica L Eggleston, Emily P Walker, Yonghee Oh

Abstract read
In one paragraph

Article in Journal of the Association for Research in Otolaryngology : JARO, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing 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

34 citing papers in PubMed.

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  8. Fusion of dichotic consonants in normal-hearing and hearing-impaired listenersa).The Journal of the Acoustical Society of America · 2024
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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.

Lina A J ReissOregon Hearing Research Center, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239, USA. reiss@ohsu.edu.
Jessica L EgglestonOregon Hearing Research Center, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239, USA.
Emily P WalkerOregon Hearing Research Center, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239, USA.
Yonghee OhOregon Hearing Research Center, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239, USA.

Funding

PORTLAND AREA COMMUNICATION RESEARCH CORE CENTERP30DC005983 · NIDCD · OREGON HEALTH & SCIENCE UNIVERSITY · PI BARR-GILLESPIE, PETER GORDON · 2003 to 2017
$9.0M
Binaural Spectral Integration with Hearing Loss and Hearing Devices (Administrative Supplement)R01DC013307 · NIDCD · OREGON HEALTH & SCIENCE UNIVERSITY · PI REISS, LINA A. · 2014 to 2023
$4.7M
Development of Translational Research to Improve Outcomes for Cochlear ImplantsP30DC010755 · NIDCD · OREGON HEALTH & SCIENCE UNIVERSITY · PI FLINT, PAUL W · 2009 to 2010
$1.3M
NIDCD NIH HHS P30 DC005983NIDCD NIH HHS P30 DC010755NIDCD NIH HHS R01 DC013307
6 · The paper itself

Abstract

Hearing loss and auditory prostheses can alter auditory processing by inducing large pitch mismatches and broad pitch fusion between the two ears. Similar to integration of incongruent inputs in other sensory modalities, the mismatched, fused pitches are often averaged across ears for simple stimuli. Here, we measured parallel effects on complex stimulus integration using a new technique based on vowel classification in five bilateral hearing aid users and eight bimodal cochlear implant users. Continua between five pairs of synthetic vowels were created by varying the first formant spectral peak while keeping the second formant constant. Comparison of binaural and monaural vowel classification functions for each vowel pair continuum enabled visualization of the following frequency-dependent integration trends: (1) similar monaural and binaural functions, (2) ear dominance, (3) binaural averaging, and (4) binaural interference. Hearing aid users showed all trends, while bimodal cochlear implant users showed mostly ear dominance or interference. Interaural pitch mismatches, frequency ranges of binaural pitch fusion, and the relative weightings of pitch averaging across ears were also measured using tone and/or electrode stimulation. The presence of both large interaural pitch mismatches and broad pitch fusion was not sufficient to predict vowel integration trends such as binaural averaging or interference. The way that pitch averaging was weighted between ears also appears to be important for determining binaural vowel integration trends. Abnormally broad spectral fusion and the associated phoneme fusion across mismatched ears may underlie binaural speech perception interference observed in hearing aid and cochlear implant users.

Indexed as

Cochlear ImplantsSpeech PerceptionAgedAged, 80 and overFemaleHearing LossHumansMalebimodal cochlear implantbinaural integrationcochlear implantfusionhearing aidhearing losspitchspeechvowel

Identifiers

PMID27220769
PMCPMC4940290

What OpenQuestion holds

Textmetadata
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.