Evidence map›Paper›PMID 23882176›Full record

ArticleFrontiers in neuroscience2013

Perception of stochastically undersampled sound waveforms: a model of auditory deafferentation.

Enrique A Lopez-Poveda, Pablo Barrios

Abstract read
In one paragraph

Article in Frontiers in neuroscience, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed, 2 pooled it
–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

55 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Neural and behavioral changes after the use of hearing aids.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2018
    Trial
  4. Article
  5. Article
  6. Article
  7. Article
  8. Cochlear Synaptopathy Evaluation With Electrocochleography in Patients With Hearing Difficulty in Noise Despite Normal Hearing Levels.Clinical otolaryngology : official journal of ENT-UK ; official journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Computational modeling of the human compound action potential.The Journal of the Acoustical Society of America · 2023
    Article
  15. Review
  16. Article
  17. Review
  18. Neural Presbyacusis in Humans Inferred from Age-Related Differences in Auditory Nerve Function and Structure.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Article
  19. Aging Effects on Cortical Responses to Tones and Speech in Adult Cochlear-Implant Users.Journal of the Association for Research in Otolaryngology : JARO · 2021
    Article
  20. Article
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

2 authors.

Enrique A Lopez-PovedaUnidad de Audición Computacional y Psicoacústica, Instituto de Neurociencias de Castilla y León, Universidad de Salamanca Salamanca, Spain ; Grupo de Audiología, Instituto de Investigación Biomédica de Salamanca Salamanca, Spain ; Departamento de Cirugía, Facultad de Medicina, Universidad de Salamanca Salamanca, Spain.
Pablo Barrios

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Auditory deafferentation, or permanent loss of auditory nerve afferent terminals, occurs after noise overexposure and aging and may accompany many forms of hearing loss. It could cause significant auditory impairment but is undetected by regular clinical tests and so its effects on perception are poorly understood. Here, we hypothesize and test a neural mechanism by which deafferentation could deteriorate perception. The basic idea is that the spike train produced by each auditory afferent resembles a stochastically digitized version of the sound waveform and that the quality of the waveform representation in the whole nerve depends on the number of aggregated spike trains or auditory afferents. We reason that because spikes occur stochastically in time with a higher probability for high- than for low-intensity sounds, more afferents would be required for the nerve to faithfully encode high-frequency or low-intensity waveform features than low-frequency or high-intensity features. Deafferentation would thus degrade the encoding of these features. We further reason that due to the stochastic nature of nerve firing, the degradation would be greater in noise than in quiet. This hypothesis is tested using a vocoder. Sounds were filtered through ten adjacent frequency bands. For the signal in each band, multiple stochastically subsampled copies were obtained to roughly mimic different stochastic representations of that signal conveyed by different auditory afferents innervating a given cochlear region. These copies were then aggregated to obtain an acoustic stimulus. Tone detection and speech identification tests were performed by young, normal-hearing listeners using different numbers of stochastic samplers per frequency band in the vocoder. Results support the hypothesis that stochastic undersampling of the sound waveform, inspired by deafferentation, impairs speech perception in noise more than in quiet, consistent with auditory aging effects.

Indexed as

auditory agingauditory deafferentationhearing lossinformation theorymodelstochastic samplingvocoder

Identifiers

PMID23882176
PMCPMC3712141

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.