Efferent feedback minimizes cochlear neuropathy from moderate noise exposure.

@article{Maison2013EfferentFM,
  title={Efferent feedback minimizes cochlear neuropathy from moderate noise exposure.},
  author={St{\'e}phane F Maison and Hajime Usubuchi and M Charles Liberman},
  journal={The Journal of neuroscience : the official journal of the Society for Neuroscience},
  year={2013},
  volume={33 13},
  pages={5542-52}
}
Although protective effects of the cochlea's efferent feedback pathways have been well documented, prior work has focused on hair cell damage and cochlear threshold elevation and, correspondingly, on the high sound pressure levels (>100 dB SPL) necessary to produce them. Here we explore the noise-induced loss of cochlear neurons that occurs with lower-intensity exposures and in the absence of permanent threshold shifts. Using confocal microscopy to count synapses between hair cells and cochlear… CONTINUE READING