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

J. S. Tripovich, S. C. Purdy, C. Hogg, T. L. Rogers

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)483-487
    Number of pages5
    JournalJournal of the Acoustical Society of America
    Volume129
    Issue number1
    DOIs
    Publication statusPublished - Jan 2011

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