The effects of anesthesia on otoacoustic emissions.

  title={The effects of anesthesia on otoacoustic emissions.},
  author={Noam Harel and Akinobu Kakigi and Hirofumi Hirakawa and Richard J. Mount and Robert V. Harrison},
  journal={Hearing research},
  volume={110 1-2},
We have measured transient-evoked and distortion-product otoacoustic emissions (OAEs) in the chinchilla and compared them in the awake and anesthetized animal (using either ketamine or barbiturate agents). We report a significant increase in OAE amplitudes during anesthesia, particularly using ketamine. These effects are most evident for transient-evoked otoacoustic emissions (TEOAEs) as measured in the non-linear mode. Our data support the hypothesis that tonic activity levels in cochlear… CONTINUE READING
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