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. 1993 Nov;173(5):649-56.
doi: 10.1007/BF00197772.

ABR frequency tuning curves in dolphins

A Y Supin  1 , V V Popov, V O Klishin
Affiliations

ABR frequency tuning curves in dolphins

A Y Supin et al. J Comp Physiol A. 1993 Nov.

Abstract

Tone-tone masking was used to determine auditory brain-stem response tuning curves in dolphins (Tursiops truncatus) in a simultaneous-masking paradigm. The Q10 of the curves was as large as 16-19 in the frequency range 64-128 kHz. In the range 45-16 kHz, Q10 decreased proportionally to the frequency with the bandwidth of the curves being constant, about 3.5-4 kHz at the 10-dB level. Tuning curves below 45 kHz are supposed to reflect broad spectral bandwidth of the probe's effective part which is no longer than 0.5 ms, irrespective of actual probe duration. Tuning curves above 64 kHz are supposed to reflect the real frequency tuning of the dolphin's auditory system.

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