Work on beluga whale hearing in which either a 32 or 45 kHz tone was presented prior to a loud 32 kHz tone showed that either warning tone caused the whale to dampen its hearing in anticipation of the loud sound. This response was quickly learned within a single day but took three days to extinguish when the loud sound was removed. This work, presented at the recent SMM meeting in San Francisco, is now available as a publication in the Journal of Comparative Physiology A. DOI.
Nachtigall, P.E., Supin, A.Ya. Estaban, J.A.,
and Pacini, A.F. (2016) Learning and extinction of conditioned hearing
sensation change in the beluga whale (Delphinapterus
leucas) Journal of Comparative Physiology A DOI
10.1007/s00359-015-1056-x
A limited number of preprints are available on request.