The avian head induces cues for sound localization in elevation.

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  • Additional Information
    • Source:
      Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE
    • Publication Information:
      Original Publication: San Francisco, CA : Public Library of Science
    • Subject Terms:
      Cues* ; Sound Localization*; Birds/*anatomy & histology ; Birds/*physiology ; Head Movements/*physiology; Acoustic Stimulation ; Algorithms ; Animals ; Orientation
    • Abstract:
      Accurate sound source localization in three-dimensional space is essential for an animal's orientation and survival. While the horizontal position can be determined by interaural time and intensity differences, localization in elevation was thought to require external structures that modify sound before it reaches the tympanum. Here we show that in birds even without external structures like pinnae or feather ruffs, the simple shape of their head induces sound modifications that depend on the elevation of the source. Based on a model of localization errors, we show that these cues are sufficient to locate sounds in the vertical plane. These results suggest that the head of all birds induces acoustic cues for sound localization in the vertical plane, even in the absence of external ears.
    • Comments:
      Erratum in: PLoS One. 2015 Feb 26;10(2):e0118325. doi: 10.1371/journal.pone.0118325. (PMID: 25719365)
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    • Publication Date:
      Date Created: 20141113 Date Completed: 20150708 Latest Revision: 20181113
    • Publication Date:
      20250114
    • Accession Number:
      PMC4229125
    • Accession Number:
      10.1371/journal.pone.0112178
    • Accession Number:
      25390036