Cochlear inner and outer hair cells: Functional differences

Peter Dallos*, M. C. Billone, J. D. Durrant, C. Y. Wang, S. Raynor

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

193 Scopus citations


The cochlear microphonic response was measured with differential electrodes from the first and third cochlear turns of normal guinea pigs and those treated with the ototoxic drug kanamycin. Histological controls showed that the outer hair cells in treated animals were missing over the basal half of the damaged cochleas, while the inner hair cells were intact. Measurements are consistent with the hypothesis that the potentials produced by inner hair cells are proportional to the velocity of the basilar membrane, whereas potentials generated by outer hair cells (which dominate the response of normal cochleas) are proportional to the displacement of the basilar membrane.

Original languageEnglish (US)
Pages (from-to)356-358
Number of pages3
Issue number4046
StatePublished - 1972

ASJC Scopus subject areas

  • General


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