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    The Cochlear Labyrinth of Krapina Neandertals

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    Beals_ku_0099M_12071_DATA_1.pdf (1.733Mb)
    Issue Date
    2012-05-31
    Author
    Beals, Michaela Eve
    Publisher
    University of Kansas
    Format
    66 pages
    Type
    Thesis
    Degree Level
    M.A.
    Discipline
    Anthropology
    Rights
    This item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
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    Abstract
    This study presents measurements of the cochlear labyrinth of Krapina Neandertals based on ultra high-resolution computed tomography. The cochlea, a membranous, fluid-filled structure, houses the sensory end organ of the auditory system. Located within the inner ear, the cochlea occupies a spiral shaped cavity within the bony labyrinth of the petrous bone. The close anatomical relationship between the membranous cochlea and the bony cochlear labyrinth allows for the determination of cochlear size from fossil specimens. Recent studies with extant primate taxa suggest that cochlear labyrinth volume is functionally related to the range of audible frequencies. Specifically, cochlear volume is negatively correlated with both the high and low frequency limits of hearing so that the smaller the cochlea, the higher the range of audible frequencies. This study shows that the Krapina Neandertals' cochlear volumes are similar to modern Homo sapiens and larger than chimpanzee and gorilla cochlear volumes. Although the nature of the relationship between cochlear volume and hearing abilities remains speculative, the measured cochlear volume in Krapina Neandertals suggests they had a range of audible frequencies that is similar to the modern human range.
    URI
    http://hdl.handle.net/1808/10655
    Collections
    • Theses [3743]
    • Anthropology Dissertations and Theses [107]
    • Anthropology Dissertations and Theses [107]

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    785-864-8983

    KU Libraries
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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