Abstract:
:Compared to all other hearing animals, insects are the smallest ones, both in absolute terms and in relation to the wavelength of most biologically relevant sounds. The ears of insects can be located at almost any possible body part, such as wings, legs, mouthparts, thorax or abdomen. The interaural distances are generally so small that cues for directional hearing such as interaural time and intensity differences (IITs and IIDs) are also incredibly small, so that the small body size should be a strong constraint for directional hearing. Yet, when tested in behavioral essays for the precision of sound source localization, some species demonstrate hyperacuity in directional hearing and can track a sound source deviating from the midline by only [Formula: see text]-[Formula: see text]. They can do so by using internally coupled ears, where sound pressure can act on both sides of a tympanic membrane. Here we describe their varying anatomy and mode of operation for some insect groups, with a special focus on crickets, exhibiting probably one of the most sophisticated of all internally coupled ears in the animal kingdom.
journal_name
Biol Cybernjournal_title
Biological cyberneticsauthors
Römer H,Schmidt AKdoi
10.1007/s00422-015-0672-4subject
Has Abstractpub_date
2016-10-01 00:00:00pages
247-254issue
4-5eissn
0340-1200issn
1432-0770pii
10.1007/s00422-015-0672-4journal_volume
110pub_type
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