Changes in Stimulus Frequency Otoacoustic Emissions Produced by Two-Tone Suppression and Efferent Stimulation in Cats

  • John J. GuinanJr.
Part of the Lecture Notes in Biomathematics book series (LNBM, volume 87)


Efferent activity and two-tone suppression might affect the cochlear amplifier at different sites but produce similar effects. Their effects on stimulus-frequency otoacoustic emissions (SFEs) were compared in cats by measuring the vector change in ear-canal sound pressure. The results indicate that contributions to the SFE originate along a large fraction of the length of the cochlea, and that SFEs may provide a ‘window’ into the action of the cochlear amplifier.


Basilar Membrane Probe Frequency Efferent Activity Probe Tone Efferent Effect 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • John J. GuinanJr.
    • 1
  1. 1.Dept. of Elec. Eng. & Compo Sci., and Research Lab of Elec.Mass. Inst. of Tech. Eaton-Peabody Lab, Mass. Eye & Ear InfirmaryBostonUSA

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