Signal flow inside the tunnel of Corti

Egbert De Boer, Fangyi Chen, Dingjun Zha, Karl Grosh, Amir Nankali, Alfred Nuttall

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

Abstract

All With the advent of Optical Coherence Tomography (OCT), a variation of the standard laser-interferometer technique, vibrations of various points inside the cochlea can be measured separately and concurrently. In this work we measured vibrations of the basilar membrane (BM) and the Reticular Lamina (RL) in the cochlea of the guinea pig. Stimulus tones had frequencies in the range from 10 to 25 kHz, they were generated and measured with a spacing of 250 Hz. By smoothing and interpolation the spacing was reduced to 50 Hz. We confirmed earlier findings in that in viable animals the responses at the RL are generally larger than those of the BM, and have smaller phase delays. Moreover, these differences are little dependent of the level of stimulation. Our main hypothesis is: stimulation of the stapes primarily excites the structures in the upper (RL) part of the Organ of Corti (OoC) channel. Subsequently, movements of the RL cause movements of the fluid in the OoC channel, which in turn moves the BM. Computation of the sound field generated by the RL yielded results that agree very well with the data. These results thus confirm the hypothesis.

Original languageEnglish (US)
Title of host publicationTo the Ear and Back Again - Advances in Auditory Biophysics
Subtitle of host publicationProceedings of the 13th Mechanics of Hearing Workshop
PublisherAmerican Institute of Physics Inc.
Volume1965
ISBN (Electronic)9780735416703
DOIs
StatePublished - May 31 2018
Event13th Mechanics of Hearing Workshop: To the Ear and Back Again - Advances in Auditory Biophysics, MoH 2017 - St. Catharines, Canada
Duration: Jun 19 2017Jun 24 2017

Other

Other13th Mechanics of Hearing Workshop: To the Ear and Back Again - Advances in Auditory Biophysics, MoH 2017
CountryCanada
CitySt. Catharines
Period6/19/176/24/17

Fingerprint

tunnels
cochlea
membranes
stimulation
organs
spacing
guinea pigs
vibration
sound fields
smoothing
stimuli
interpolation
animals
interferometers
tomography
causes
fluids
lasers

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

De Boer, E., Chen, F., Zha, D., Grosh, K., Nankali, A., & Nuttall, A. (2018). Signal flow inside the tunnel of Corti. In To the Ear and Back Again - Advances in Auditory Biophysics: Proceedings of the 13th Mechanics of Hearing Workshop (Vol. 1965). [140001] American Institute of Physics Inc.. https://doi.org/10.1063/1.5038521

Signal flow inside the tunnel of Corti. / De Boer, Egbert; Chen, Fangyi; Zha, Dingjun; Grosh, Karl; Nankali, Amir; Nuttall, Alfred.

To the Ear and Back Again - Advances in Auditory Biophysics: Proceedings of the 13th Mechanics of Hearing Workshop. Vol. 1965 American Institute of Physics Inc., 2018. 140001.

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

De Boer, E, Chen, F, Zha, D, Grosh, K, Nankali, A & Nuttall, A 2018, Signal flow inside the tunnel of Corti. in To the Ear and Back Again - Advances in Auditory Biophysics: Proceedings of the 13th Mechanics of Hearing Workshop. vol. 1965, 140001, American Institute of Physics Inc., 13th Mechanics of Hearing Workshop: To the Ear and Back Again - Advances in Auditory Biophysics, MoH 2017, St. Catharines, Canada, 6/19/17. https://doi.org/10.1063/1.5038521
De Boer E, Chen F, Zha D, Grosh K, Nankali A, Nuttall A. Signal flow inside the tunnel of Corti. In To the Ear and Back Again - Advances in Auditory Biophysics: Proceedings of the 13th Mechanics of Hearing Workshop. Vol. 1965. American Institute of Physics Inc. 2018. 140001 https://doi.org/10.1063/1.5038521
De Boer, Egbert ; Chen, Fangyi ; Zha, Dingjun ; Grosh, Karl ; Nankali, Amir ; Nuttall, Alfred. / Signal flow inside the tunnel of Corti. To the Ear and Back Again - Advances in Auditory Biophysics: Proceedings of the 13th Mechanics of Hearing Workshop. Vol. 1965 American Institute of Physics Inc., 2018.
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