Skip to main content
Log in

Adaptation in the auditory system of a beluga whale: effect of adapting sound parameters

  • Original Paper
  • Published:
Journal of Comparative Physiology A Aims and scope Submit manuscript

Abstract

The effects of adapting sounds (pip trains or pure tones) on auditory evoked potentials (the rate following response, RFR) were investigated in a beluga whale. During RFR acquisition, adapting signals lasting 128 ms each were alternated with test signals lasting 16 ms each; the test signal levels varied randomly. Adapting signals were trains of cosine-enveloped tone pips or pure tones. Pip rate varied with the envelope cosine cycle maintained at 0.125 of pip intervals and the cosine rise–fall time maintained at 0.0625 of pip intervals. Adapting signals shifted the amplitude-level function upward compared to the baseline (no adapting signal) function. The higher the adapting signal level was, the bigger the shift in the amplitude-level function was. The slower the pips were in the adapting signal, the smaller the adaptation effect was. A train of pips with a 0.0625-ms rise–fall time and 125 dB SPL shifted the function by 35–40 dB, whereas a train of pips with a 1-ms rise–fall time or a pure tone with the same SPL shifted the function by approximately 15 dB. The difference between the “fast” and “slow” adapting signals is supposed to be associated with their abilities to stimulate the auditory system in odontocetes.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

Abbreviations

ABR:

Auditory brainstem response

AEP:

Auditory evoked potential

RFR:

Rate following response

RMS:

Root-mean-square

SPL:

Sound pressure level

TTS:

Temporary threshold shift

References

Download references

Acknowledgements

This study was supported by the Russian Foundation for Basic Research (Grant no. 18-04-00088) to VVP. All procedures performed in the study were in accordance with the ethical standards of the Institute of Ecology and Evolution, Russian Academy of Sciences, and were approved by the Ethical Committee of the Institute. Authors thank American Journal experts for language editing.

Funding

This study was supported by the Russian Foundation for Basic Research (Grant no. 18-04-00088).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Vladimir V. Popov.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Popov, V.V., Supin, A.Y., Nechaev, D.I. et al. Adaptation in the auditory system of a beluga whale: effect of adapting sound parameters. J Comp Physiol A 205, 707–715 (2019). https://doi.org/10.1007/s00359-019-01358-w

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00359-019-01358-w

Keywords

Navigation