Adaptation in the auditory system of a beluga whale: effect of adapting sound parameters
| Autor: | Evgenia V. Sysueva, Vladimir V. Popov, Dmitri I. Nechaev, Alexander Ya. Supin |
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| Rok vydání: | 2019 |
| Předmět: |
medicine.medical_specialty
Physiology Tone pips 030310 physiology Adaptation (eye) Audiology Signal 03 medical and health sciences Behavioral Neuroscience 0302 clinical medicine Hearing medicine Animals Auditory system Ecology Evolution Behavior and Systematics Mathematics 0303 health sciences Pure tone Adaptation Physiological Signal level Sound medicine.anatomical_structure Evoked Potentials Auditory Beluga Whale Female Animal Science and Zoology 030217 neurology & neurosurgery |
| Zdroj: | Journal of Comparative Physiology A. 205:707-715 |
| ISSN: | 1432-1351 0340-7594 |
| DOI: | 10.1007/s00359-019-01358-w |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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