Abstract
“Cochlear echoes” occur in restricted frequency bands specific to each ear, with a long peak latency. A computer simulation has been developed based on basilar membrane vibration amplitude and phase followed by a “second filter” process. The vector sum of the second filter outputs, representing gross cochlear activity, is very small for a smoothly changing basilar membrane impedance and regular tonotopic mapping of the second filters. However, any small irregularity in either of these functions leads to a greatly enhanced response in the corresponding frequency region, which simulates the bandwidth, latency, and other features of cochlear echoes.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Allen, J.B. (1977). Cochlear micromechanics — a mechanism for transforming mechanical to neural tuning within the cochlea. J. Acoust. Soc. Am. 62, 930–939.
De Boer, E. (1980). Auditory Physics: Physical Principles in Hearing Theory I. Physics Reports 62(2), 87–174.
Glanville, J.D., Coles, R.R.A., Sullivan, B.M. (1971). A family with hightonal objective tinnitus. J. Laryngol. Otol. 85, 1–10.
Kemp, D.T. (1978). Stimulated acoustic emissions from within the human auditory system. J. Acoust. Soc. Am. 64, 1386–1391.
Kemp, D.T. (1979). The evoked cochlear mechanical response and the auditory microstructure — evidence for a new element in cochlear mechanics. Scand. Audiol. Suppl. 9, 35–47.
Kemp, D.T. (1981). Physiologically active cochlear micromechanics — one source of tinnitus. In: Tinnitus, edited by D. Evered and G. Lawrenson (Pitman, London), pp. 54–81.
Khanna, S.M. and Leonard, D.G.B. (1981). Basilar membrane tuning in the cat cochlea. Science 215, 305–306.
Kim, D.O., Neely, S.T., Molnar, C.E., and Matthews, J.W. (1980a). An active cochlear model with negative damping in the partition. In: Psychophysical, Physiological & Behavioural Studies in Hearing, edited by G. van den Brink & F.A. Bilsen (Delft University Press), pp. 7–14.
Kim, D.O., Molnar, C.E., and Matthews, J.W. (1980b). Cochlear mechanics: nonlinear behavior in two tone responses as reflected in cochlear-nerve-fiber responses and in ear canal sound pressure. J. Acoust. Soc. Am. 67, 1704–1721.
Neely, S.T. (1981). Fourth-Order Partition Dynamics for a TuJo-Dimensional Model of the Cochlea Ph.D. Thesis. Univ. of Washington, Saint Louis.
Sellick, P.M., Patuzzi, R. and Johnstone, B.M. (1982). Measurement of basilar membrane motion in guinea pig using the Mössbauer technique. J. Acoust. Soc. Am. 72, 131–141.
Wilson, J.P. (1980a). Evidence for a cochlear origin for acoustic re-emissions, threshold fine-structure and tinnitus. Hearing Research 2, 233–252.
Wilson, J.P. (1980b). Model for cochlear echoes and tinnitus based on an observed electrical correlate. Hearing Research 2, 527–532.
Wilson, J.P. (1980c). Model of cochlear function and acoustic re-emission. In: Psychophysical, Physiological & Behavioural Studies in Hearing, edited by G. van den Brink & F.A. Bilsen (Delft University Press), pp. 72–73.
Wilson, J.P. and Sutton, G.J. (1981). Acoustic correlates of tonal tinnitus. In: Tinnitus, edited by D. Evered and G. Lawrenson (Pitman, London), pp. 82–107.
Wilson, J.P. and Sutton, G.J. (1983). A family with high-tonal objective tinnitus — an update. In: Hearing — Physiological Bases and Psychophysics, edited by R. Klinke and R. Hartmann (Springer, Berlin).
Zurek, P.M. and Clark, W.W. (1981). Narrowband acoustic signals emitted by chinchilla ears after noise exposure. J. Acoust. Soc. Am. 70, 446–450.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1983 Delft University Press, The Netherlands
About this paper
Cite this paper
Sutton, G.J., Wilson, J.P. (1983). Modelling Cochlear Echoes: The Influence of Irregularities in Frequency Mapping on Summed Cochlear Activity. In: de Boer, E., Viergever, M.A. (eds) Mechanics of Hearing. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6911-7_10
Download citation
DOI: https://doi.org/10.1007/978-94-009-6911-7_10
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-009-6913-1
Online ISBN: 978-94-009-6911-7
eBook Packages: Springer Book Archive