Skip to main content
Top

02-04-2024 | Review

Echolocating Bats Have Evolved Decreased Susceptibility to Noise-Induced Temporary Hearing Losses

Authors: Andrea Megela Simmons, James A. Simmons

Published in: Journal of the Association for Research in Otolaryngology

Login to get access

Abstract

Glenis Long championed the application of quantitative psychophysical methods to understand comparative hearing abilities across species. She contributed the first psychophysical studies of absolute and masked hearing sensitivities in an auditory specialist, the echolocating horseshoe bat. Her data demonstrated that this bat has hyperacute frequency discrimination in the 83-kHz range of its echolocation broadcast. This specialization facilitates the bat’s use of Doppler shift compensation to separate echoes of fluttering insects from concurrent echoes of non-moving objects. In this review, we discuss another specialization for hearing in a species of echolocating bat that contributes to perception of echoes within a complex auditory scene. Psychophysical and behavioral studies with big brown bats show that exposures to long duration, intense wideband or narrowband ultrasonic noise do not induce significant increases in their thresholds to echoes and do not impair their ability to orient through a naturalistic sonar scene containing multiple distracting echoes. Thresholds of auditory brainstem responses also remain low after intense noise exposures. These data indicate that big brown bats are not susceptible to temporary threshold shifts as measured in comparable paradigms used with other mammals, at least within the range of stimulus parameters that have been tested so far. We hypothesize that echolocating bats have evolved a decreased susceptibility to noise-induced hearing losses as a specialization for echolocation in noisy environments.
Literature
1.
go back to reference Long GR (1994) Psychophysics. In: Fay RR, Popper AN (eds) Comparative hearing: mammals. Springer-Verlag, New York, pp 18–56CrossRef Long GR (1994) Psychophysics. In: Fay RR, Popper AN (eds) Comparative hearing: mammals. Springer-Verlag, New York, pp 18–56CrossRef
3.
go back to reference Griffin DR (1958) Listening in the dark. Yale University Press, reprinted Cornell University Press 1986 Griffin DR (1958) Listening in the dark. Yale University Press, reprinted Cornell University Press 1986
16.
go back to reference Long GR (1980) Further studies of masking in the greater horseshoe bat, Rhinolophus ferrumequinum. In: Busnel R-G, Fish JF (eds) Animal sonar systems. Plenum Press, New York, pp 929–932CrossRef Long GR (1980) Further studies of masking in the greater horseshoe bat, Rhinolophus ferrumequinum. In: Busnel R-G, Fish JF (eds) Animal sonar systems. Plenum Press, New York, pp 929–932CrossRef
17.
go back to reference Griffin DR, McCue JJG, Grinnell AD (1963) The resistance of bats to jamming. J Exp Zool 152:229–250CrossRef Griffin DR, McCue JJG, Grinnell AD (1963) The resistance of bats to jamming. J Exp Zool 152:229–250CrossRef
20.
go back to reference Stilz WP, Schnitzler H-U (2012) Estimation of the acoustic range of bat echolocation for extended targets. J Acoust Soc Am 132:1765–1775CrossRefPubMed Stilz WP, Schnitzler H-U (2012) Estimation of the acoustic range of bat echolocation for extended targets. J Acoust Soc Am 132:1765–1775CrossRefPubMed
24.
go back to reference Smotherman MS, Simmons AM, Simmons JA (2021) How noise affects bats and what it reveals about their biosonar systems. In: Lim B, Fenton B, Brigham M, Mistry S, Kurta A, Gillam E, Russell A, Ortega J (eds) 50 years of bat research: foundations and new frontiers. Springer-Verlag, New York, pp 61–76CrossRef Smotherman MS, Simmons AM, Simmons JA (2021) How noise affects bats and what it reveals about their biosonar systems. In: Lim B, Fenton B, Brigham M, Mistry S, Kurta A, Gillam E, Russell A, Ortega J (eds) 50 years of bat research: foundations and new frontiers. Springer-Verlag, New York, pp 61–76CrossRef
42.
Metadata
Title
Echolocating Bats Have Evolved Decreased Susceptibility to Noise-Induced Temporary Hearing Losses
Authors
Andrea Megela Simmons
James A. Simmons
Publication date
02-04-2024
Publisher
Springer US
Published in
Journal of the Association for Research in Otolaryngology
Print ISSN: 1525-3961
Electronic ISSN: 1438-7573
DOI
https://doi.org/10.1007/s10162-024-00941-6