Toneburst-evoked auditory brainstem response in a leopard seal, Hydrurga leptonyx

作者：Tripovich J S^*; Purdy S C; Hogg C; Rogers T L

来源：Journal of the Acoustical Society of America, 2011, 129(1): 483-487.

DOI：10.1121/1.3514370

Toneburst-evoked auditory brainstem responses (ABRs) were recorded in a captive subadult male leopard seal. Three frequencies from 1 to 4 kHz were tested at sound levels from 68 to 122 dB peak equivalent sound pressure level (peSPL). Results illustrate brainstem activity within the 1-4 kHz range, with better hearing sensitivity at 4 kHz. As is seen in human ABR, only wave V is reliably identified at the lower stimulus intensities. Wave V is present down to levels of 82 dB peSPL in the right ear and 92 dB peSPL in the left ear at 4 kHz. Further investigations testing a wider frequency range on seals of various sex and age classes are required to conclusively report on the hearing range and sensitivity in this species.

• 出版日期2011-1