Spatial irregularities of sensitivity along the organ of Corti of the cochlea

Andrei N. Temchin, Mario A. Ruggero

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Fine structures of spatial profiles were computed from existing records of cat and chinchilla auditory-nerve fibers on the basis of their characteristic frequencies and cochlear maps. The spatial fine structures of characteristic-frequency thresholds and of "spontaneous" and driven firing rates were mutually correlated, implying the presence of sensitivity fluctuations due to spatial irregularities of presynaptic structures or processes of the inner hair cells and their input. These findings suggest that activity that appears spontaneous is not actually spontaneous and may indicate irregularities of tonotopic mapping in cochlear mechanics.

Original languageEnglish (US)
Pages (from-to)11349-11354
Number of pages6
JournalJournal of Neuroscience
Issue number34
StatePublished - Aug 20 2014


  • Auditory-nerve fibers
  • Cochlea
  • Inner hair cells
  • Organ of Corti
  • Spatial irregularities

ASJC Scopus subject areas

  • General Neuroscience


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