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Developmental deprivation-induced perceptual and cortical processing deficits in awake-behaving animals

  1. Justin D Yao  Is a corresponding author
  2. Dan H Sanes  Is a corresponding author
  1. New York University, United States
Research Article
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Cite this article as: eLife 2018;7:e33891 doi: 10.7554/eLife.33891

Abstract

Sensory deprivation during development induces lifelong changes to central nervous system function that are associated with perceptual impairments. However, the relationship between neural and behavioral deficits is uncertain due to a lack of simultaneous measurements during task performance. Therefore, we telemetrically recorded from auditory cortex neurons in gerbils reared with developmental conductive hearing loss as they performed an auditory task in which rapid fluctuations in amplitude are detected. These data were compared to a measure of auditory brainstem temporal processing from each animal. We found that developmental HL diminished behavioral performance, but did not alter brainstem temporal processing. However, the simultaneous assessment of neural and behavioral processing revealed that perceptual deficits were associated with a degraded cortical population code that could be explained by greater trial-to-trial response variability. Our findings suggest that the perceptual limitations that attend early hearing loss are best explained by an encoding deficit in auditory cortex.

Article and author information

Author details

  1. Justin D Yao

    Center for Neural Science, New York University, New York, United States
    For correspondence
    jdyao@nyu.edu
    Competing interests
    The authors declare that no competing interests exist.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0001-8762-9044
  2. Dan H Sanes

    Center for Neural Science, New York University, New York, United States
    For correspondence
    dhs1@nyu.edu
    Competing interests
    The authors declare that no competing interests exist.

Funding

National Institute on Deafness and Other Communication Disorders (F32 DC016508)

  • Justin D Yao

National Institute on Deafness and Other Communication Disorders (R01 DC014656)

  • Dan H Sanes

The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.

Ethics

Animal experimentation: All procedures of this study were approved by the Institutional Animal Care and Use Committee at New York University and followed guidelines established by the National Institutes of Health for the care and use of laboratory animals. All conductive hearing loss surgeries were performed under a surgical level of anesthesia induced with methoxyflurane. All auditory brainstem response recordings were performed under ketamine and pentobarbital. All electrode implant surgeries were performed under isoflurane/O2. Every effort was made to minimize suffering.

Reviewing Editor

  1. Eve Marder, Brandeis University, United States

Publication history

  1. Received: November 28, 2017
  2. Accepted: June 4, 2018
  3. Accepted Manuscript published: June 6, 2018 (version 1)
  4. Accepted Manuscript updated: June 7, 2018 (version 2)
  5. Version of Record published: June 18, 2018 (version 3)

Copyright

© 2018, Yao & Sanes

This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.

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