Influence of the Background Noise on Recognition of Signals with a Complex Spectrum Structure in the Beluga Whale (Delphinapterus leucas)

Doklady Biological Sciences : Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
Evgeniya V SysuevaVladimir V Popov

Abstract

The frequency resolving power of hearing (FRP) of the beluga whale Delphinapterus leucas was studied as dependent on influence of lasting low-intensity sounds (of the ultrasonic range from -20 to +10 dB). Testing of the spectrum ripple-phase reversal was used in conjunction with a noninvasive recording of auditory evoked potentials. FRP parameters were found to depend nonmonotonically on the intensity of the background noise. The resultant adaptation effects can be explained by the fact that, in response to the high-intensity signals, the auditory system sensitivity is reduced to the level optimal for analysis of these signals.

References

Aug 1, 1997·The Journal of the Acoustical Society of America·V V Popov, Supin AYa
Feb 15, 2007·The Journal of the Acoustical Society of America·Alexander Ya SupinMarlee Breese
Sep 23, 2014·The Journal of the Acoustical Society of America·Evgenia V SysuevaAlexander Ya Supin
Aug 4, 2015·The Journal of the Acoustical Society of America·Vladimir V PopovAlexander Ya Supin
Oct 3, 2015·The Journal of the Acoustical Society of America·James J Finneran
Apr 3, 2016·The Journal of the Acoustical Society of America·Vladimir V PopovAlexander Ya Supin

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