Evidence map›Paper›PMID 24753585›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

Mechanisms of noise robust representation of speech in primary auditory cortex.

Nima Mesgarani, Stephen V David, Jonathan B Fritz, Shihab A Shamma

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed, 1 pooled it
4.9field-weighted citation impact, top 4% 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

78 citing papers in PubMed, 1 synthesis or guideline pooled it, 150 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Review
  6. Article
  7. Interference of Mid-level Speech and Noise Statistics Underlies Human Speech Recognition Sensitivity in Natural Environmental Noise.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  8. Reduced Neural Responses to Natural Foreground versus Background Sounds in the Auditory Cortex.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  9. Article
  10. The Future of Perceptual Dysregulation in Psychiatric Nosology.Current topics in behavioral neurosciences · 2025
    Review
  11. Article
  12. Noise schemas aid hearing in noise.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Dissociable Roles of the Auditory Midbrain and Cortex in Processing the Statistical Features of Natural Sound Textures.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  19. Article
  20. Article

18 more citing papers are in PubMed but not listed here.

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 at 2 institutions in 2 countries.

Nima MesgaraniInstitute for Systems Research, University of Maryland, College Park, MD 20742.
Stephen V David
Jonathan B Fritz
Shihab A Shamma
University of Maryland, College Park · USOregon Health & Science University · US

Funding

Spectro-Temporal Plasticity in Primary Auditory CortexR01DC005779 · NIDCD · UNIV OF MARYLAND, COLLEGE PARK · PI Shihab A Shamma · 2004 to 2026
$6.7M
Neural Correlates of Streaming of Complex SoundsR01DC007657 · NIDCD · UNIV OF MARYLAND, COLLEGE PARK · PI SHAMMA, SHIHAB A · 2006 to 2015
$3.8M
Pathway to Independence Award, IndependentR00DC010439 · NIDCD · OREGON HEALTH & SCIENCE UNIVERSITY · PI DAVID, STEPHEN V · 2012 to 2014
$835k
NIDCD NIH HHS R01 DC005779NIDCD NIH HHS R01 DC007657
6 · The paper itself

Abstract

Humans and animals can reliably perceive behaviorally relevant sounds in noisy and reverberant environments, yet the neural mechanisms behind this phenomenon are largely unknown. To understand how neural circuits represent degraded auditory stimuli with additive and reverberant distortions, we compared single-neuron responses in ferret primary auditory cortex to speech and vocalizations in four conditions: clean, additive white and pink (1/f) noise, and reverberation. Despite substantial distortion, responses of neurons to the vocalization signal remained stable, maintaining the same statistical distribution in all conditions. Stimulus spectrograms reconstructed from population responses to the distorted stimuli resembled more the original clean than the distorted signals. To explore mechanisms contributing to this robustness, we simulated neural responses using several spectrotemporal receptive field models that incorporated either a static nonlinearity or subtractive synaptic depression and multiplicative gain normalization. The static model failed to suppress the distortions. A dynamic model incorporating feed-forward synaptic depression could account for the reduction of additive noise, but only the combined model with feedback gain normalization was able to predict the effects across both additive and reverberant conditions. Thus, both mechanisms can contribute to the abilities of humans and animals to extract relevant sounds in diverse noisy environments.

Indexed as

Acoustic StimulationAnimalsAuditory CortexFemaleFerretsHumansModels, NeurologicalNeuronsNoiseNonlinear DynamicsSpeech PerceptionVocalization, Animalcorticalhearingphonemespopulation code

Identifiers

PMID24753585
PMCPMC4020083
OpenAlexW2057898689

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.