Title
The Avian head induces cues for sound localization in elevation The Avian head induces cues for sound localization in elevation
Author
Faculty/Department
Faculty of Applied Economics
Publication type
article
Publication
Subject
Engineering sciences. Technology
Source (journal)
PLoS ONE
Volume/pages
9(2014) :11 , p. 1-8
ISSN
1932-6203
1932-6203
Article Reference
e112178
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
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.
E-info
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Full text (open access)
https://repository.uantwerpen.be/docman/irua/14bf32/10267.pdf
Handle