In vivo micromechanical measurements of the organ of Corti in the basal cochlear turn

Alfred L. Nuttall, Tianying Ren, Egbert De Boer, Jiefu Zheng, Anand Parthasarathi, Karl Grosh, Menghe Guo, David Dolan

Research output: Contribution to journalReview articlepeer-review

3 Scopus citations


Cochlear mechanical measurements of organ of Corti motion are generally accomplished in the apical or basal turn as in vivo or in vitro studies. In the apex it is possible to observe and measure tectorial membrane vibration as well as vibrations of structures such as the reticular lamina or the basilar membrane (BM). However, compared to the basal turn, cochlear amplification and nonlinearity are not strong in the apex. Basal turn studies have typically been limited to point location measurements of the BM but improved technology for laser interferometry is now making possible the spatial mapping of BM motion. The 'complexity' of BM motion in the radial direction (particularly the phase variation) is important to new models of cochlear wave amplification. In future work it may be possible to learn about vibration of structures within the organ of Corti.

Original languageEnglish (US)
Pages (from-to)21-26
Number of pages6
JournalAudiology and Neuro-Otology
Issue number1
StatePublished - 2002


  • Basilar membrane
  • Gerbil
  • Guinea pig
  • Laser Doppler velocimetry
  • Laser feedback interferometry

ASJC Scopus subject areas

  • Physiology
  • Otorhinolaryngology
  • Sensory Systems
  • Speech and Hearing


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