On the mechanics of the horseshoe bat cochlea

H. Duifhuis; M. Vater

doi:10.1007/978-3-642-50038-1_12

On the mechanics of the horseshoe bat cochlea

H. Duifhuis, M. Vater

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review

Samenvatting

The basilar membrane (BM) in the greater horseshoe bat has a peculiar thickness and width profile, which suggests that BM-stiffness in the basal half turn is more than one order of magnitude greater than in the second half turn and more apically. The transition is quite abrupt.

Motivated by new data on the cochlear frequency map we analyse the possibility that the stiffer basal half turn acts as an acoustic interference filter. Its increased stiffness and impedance transitions at the stapes and at the transition mentioned, make this a feasible mechanism. We propose that 2¼ wavelengths of the reflected call frequency of the echolocating bat match the length of the interference filter. Using a scaled version of the middle ear description given by Matthews (1980) and linear, passive, long-wave, 1-dimensional cochlear mechanics we analyse the effect of the interference filter and compute the tympanic membrane input impedance. Experimental data on the latter (Wilson and Bruns, 1983a) are interpreted in terms of the proposed mechanism: fine structure in the input impedance appears to reflect the interference filter passbands.

Originele taal-2	Engels
Titel	Peripheral auditory mechanisms : proceedings of a conference held at Boston University, Boston, MA, August 13-16, 1985
Redacteuren	J.B. Allen, J.L. Hall, A. Hubbard, S.T. Neely, A. Tubis
Plaats van productie	Berlin
Uitgeverij	Springer
Pagina's	89-96
ISBN van geprinte versie	0387160957, 3540160957
DOI's	https://doi.org/10.1007/978-3-642-50038-1_12
Status	Gepubliceerd - 1986
Evenement	Conference on Peripheral auditory mechanisms - Boston University, Boston, Verenigde Staten van Amerika Duur: 13 aug. 1985 → 16 aug. 1985

Publicatie series

Naam	Lecture notes in biomathematics
Uitgeverij	Springer
Volume	64

Congres

Congres	Conference on Peripheral auditory mechanisms
Land/Regio	Verenigde Staten van Amerika
Stad	Boston
Periode	13/08/85 → 16/08/85

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10.1007/978-3-642-50038-1_12

Citeer dit

Duifhuis, H., & Vater, M. (1986). On the mechanics of the horseshoe bat cochlea. In J. B. Allen, J. L. Hall, A. Hubbard, S. T. Neely, & A. Tubis (editors), Peripheral auditory mechanisms : proceedings of a conference held at Boston University, Boston, MA, August 13-16, 1985 (blz. 89-96). (Lecture notes in biomathematics; Vol. 64). Springer. https://doi.org/10.1007/978-3-642-50038-1_12

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title = "On the mechanics of the horseshoe bat cochlea",

abstract = "The basilar membrane (BM) in the greater horseshoe bat has a peculiar thickness and width profile, which suggests that BM-stiffness in the basal half turn is more than one order of magnitude greater than in the second half turn and more apically. The transition is quite abrupt.Motivated by new data on the cochlear frequency map we analyse the possibility that the stiffer basal half turn acts as an acoustic interference filter. Its increased stiffness and impedance transitions at the stapes and at the transition mentioned, make this a feasible mechanism. We propose that 2¼ wavelengths of the reflected call frequency of the echolocating bat match the length of the interference filter. Using a scaled version of the middle ear description given by Matthews (1980) and linear, passive, long-wave, 1-dimensional cochlear mechanics we analyse the effect of the interference filter and compute the tympanic membrane input impedance. Experimental data on the latter (Wilson and Bruns, 1983a) are interpreted in terms of the proposed mechanism: fine structure in the input impedance appears to reflect the interference filter passbands.",

author = "H. Duifhuis and M. Vater",

year = "1986",

doi = "10.1007/978-3-642-50038-1_12",

language = "English",

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editor = "J.B. Allen and J.L. Hall and A. Hubbard and S.T. Neely and A. Tubis",

booktitle = "Peripheral auditory mechanisms : proceedings of a conference held at Boston University, Boston, MA, August 13-16, 1985",

address = "Germany",

note = "Conference on Peripheral auditory mechanisms ; Conference date: 13-08-1985 Through 16-08-1985",

}

Duifhuis, H & Vater, M 1986, On the mechanics of the horseshoe bat cochlea. in JB Allen, JL Hall, A Hubbard, ST Neely & A Tubis (uitgave), Peripheral auditory mechanisms : proceedings of a conference held at Boston University, Boston, MA, August 13-16, 1985. Lecture notes in biomathematics, vol. 64, Springer, Berlin, blz. 89-96, Conference on Peripheral auditory mechanisms, Boston, Massachusetts, Verenigde Staten van Amerika, 13/08/85. https://doi.org/10.1007/978-3-642-50038-1_12

On the mechanics of the horseshoe bat cochlea. / Duifhuis, H.; Vater, M.
Peripheral auditory mechanisms : proceedings of a conference held at Boston University, Boston, MA, August 13-16, 1985. uitgave / J.B. Allen; J.L. Hall; A. Hubbard; S.T. Neely; A. Tubis. Berlin: Springer, 1986. blz. 89-96 (Lecture notes in biomathematics; Vol. 64).

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review

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AU - Duifhuis, H.

AU - Vater, M.

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N2 - The basilar membrane (BM) in the greater horseshoe bat has a peculiar thickness and width profile, which suggests that BM-stiffness in the basal half turn is more than one order of magnitude greater than in the second half turn and more apically. The transition is quite abrupt.Motivated by new data on the cochlear frequency map we analyse the possibility that the stiffer basal half turn acts as an acoustic interference filter. Its increased stiffness and impedance transitions at the stapes and at the transition mentioned, make this a feasible mechanism. We propose that 2¼ wavelengths of the reflected call frequency of the echolocating bat match the length of the interference filter. Using a scaled version of the middle ear description given by Matthews (1980) and linear, passive, long-wave, 1-dimensional cochlear mechanics we analyse the effect of the interference filter and compute the tympanic membrane input impedance. Experimental data on the latter (Wilson and Bruns, 1983a) are interpreted in terms of the proposed mechanism: fine structure in the input impedance appears to reflect the interference filter passbands.

AB - The basilar membrane (BM) in the greater horseshoe bat has a peculiar thickness and width profile, which suggests that BM-stiffness in the basal half turn is more than one order of magnitude greater than in the second half turn and more apically. The transition is quite abrupt.Motivated by new data on the cochlear frequency map we analyse the possibility that the stiffer basal half turn acts as an acoustic interference filter. Its increased stiffness and impedance transitions at the stapes and at the transition mentioned, make this a feasible mechanism. We propose that 2¼ wavelengths of the reflected call frequency of the echolocating bat match the length of the interference filter. Using a scaled version of the middle ear description given by Matthews (1980) and linear, passive, long-wave, 1-dimensional cochlear mechanics we analyse the effect of the interference filter and compute the tympanic membrane input impedance. Experimental data on the latter (Wilson and Bruns, 1983a) are interpreted in terms of the proposed mechanism: fine structure in the input impedance appears to reflect the interference filter passbands.

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ER -

On the mechanics of the horseshoe bat cochlea

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