Stiffness properties of the reticular lamina and the tectorial membrane as measured in the gerbil cochlea

C. P. Richter, A. Quesnel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Driving point stiffnesses of the reticular lamina with its supporting structures and the tectorial membrane (TM) were determined with a piezoelectric sensor. Measurements were made at several radial positions and at four locations along the cochlea from base to apex. Furthermore, using a stiff probe, static images of the stepwise indentation of the reticular lamina (RL) were captured to monitor relative displacements of structures within the organ of Corti. Stiffness values at the RL approximately matched the stiffness values of the TM for each of the locations along the length of the cochlea. Reticular lamina moved like a rigid lever with its pivot point at the pillar cells’ heads. Moreover, reticular lamina displacement was slightly greater than outer hair cell (OHC) or Deiters’ cell cups displacement. While basilar membrane displecements were below the detection threshold of the system, the lower two thirds of the Deiters cells were compressed the most.

Original languageEnglish (US)
Title of host publicationAuditory Mechanisms
Subtitle of host publicationProcesses and Models - Proceedings of the 9th International Symposium
EditorsAlfred L. Nuttall, Tianying Ren, Peter Gillespie, Karl Grosh, Egbert de Boer
PublisherWorld Scientific Publishing Co. Pte Ltd
Pages70-78
Number of pages9
ISBN (Electronic)9812568247, 9789812568243
StatePublished - 2005
Event9th International Mechanics of Hearing Workshop on Auditory Mechanisms: Processes and Models, MoH 2005 - Portland, United States
Duration: Jul 23 2005Jul 28 2005

Publication series

NameAuditory Mechanisms: Processes and Models - Proceedings of the 9th International Symposium

Conference

Conference9th International Mechanics of Hearing Workshop on Auditory Mechanisms: Processes and Models, MoH 2005
CountryUnited States
CityPortland
Period7/23/057/28/05

ASJC Scopus subject areas

  • Biotechnology
  • Biomedical Engineering

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