Mechanisms of sound localization in the barn owl (Tyto alba)

@article{Knudsen2004MechanismsOS,
  title={Mechanisms of sound localization in the barn owl (Tyto alba)},
  author={Eric I. Knudsen and Masakazu Konishi},
  journal={Journal of comparative physiology},
  year={2004},
  volume={133},
  pages={13-21}
}
Summary1.We investigated the mechanisms by which the barn owl (Tyto alba) determines the azimuth and elevation of a sound source. Our measure of localizing ability was the accuracy with which the owl oriented its head to a sound source.2.When localizing tonal signals, the owl committed the smallest errors at frequencies between 4 and 8 kHz. The azimuthal component of these errors was frequency independent from 1 to 8 kHz, but the elevational component increased dramatically for frequencies… Expand
Sound localization by the barn owl (Tyto alba) measured with the search coil technique
Summary1.The dynamics and accuracy of sound localization by the barn owl (Tyto alba) were studied by exploiting the natural head-orienting response of the owl to novel sound stimuli. Head orientationExpand
Target-approaching behavior of barn owls (Tyto alba): influence of sound frequency
TLDR
It was found that pre-takeoff latency was longer for the latter stimulus than for baseline and that center frequency was a better predictor for landing precision than stimulus bandwidth, which fit well with what is known from head-turning studies and from neurophysiology. Expand
Improvements of Sound Localization Abilities by the Facial Ruff of the Barn Owl (Tyto alba) as Demonstrated by Virtual Ruff Removal
TLDR
Novel stimuli to simulate the removal of the barn owl's ruff in a virtual acoustic environment are created, thus creating a situation similar to passive listening in other animals, and open up the possibility to apply the results on autonomous agents, creation of virtual auditory environments for humans, or in hearing aids. Expand
The owl's interaural pathway is not involved in sound localization
Summary1.Sound transmission through the barn owl's (Tyto alba) interaural pathway was measured by comparing the thresholds of single auditory neurons of the cochlear nucleus in response toExpand
Acoustical cues for sound localization by the Mongolian gerbil, Meriones unguiculatus.
The present study measured the head-related transfer functions (HRTFs) of the Mongolian gerbil for various sound-source directions, and explored acoustical cues for sound localization that could beExpand
Directional hearing in the barn owl (Tyto alba)
TLDR
It is proposed that ear directionality in the barn owl may be explained by the combined effect of sound diffraction by the outer ear cavity and a pressure gradient at the TM. Expand
The barn owls’ Minimum Audible Angle
TLDR
Physical and neural characteristics combine to result in better spatial acuity for frontal compared to lateral sounds and reduced localisation acuity at lower frequencies in the barn owl. Expand
Relearning Sound Localization with a New Ear
TLDR
These findings indicate that the analysis of spectral cues may involve a correlation process between the sensory input and a stored spectral representation of the subject's ears and that learning acts predominantly at a spectral-to-spatial mapping level rather than at the level of binaural weighting. Expand
Relearning Sound Localization with a New Ear
TLDR
These findings indicate that the analysis of spectral cues may involve a correlation process between the sensory input and a stored spectral representation of the subject's ears and that learning acts predominantly at a spectral-to-spatial mapping level rather than at the level of binaural weighting. Expand
Low frequency eardrum directionality in the barn owl induced by sound transmission through the interaural canal
TLDR
The sound transmission induces considerable eardrum directionality in a narrow band from 1.5 to 3.5 kHz, below the frequency range used by the barn owl for locating prey, but may conceivably be used for locating conspecific callers. Expand
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Sound localization by the barn owl (Tyto alba) measured with the search coil technique
Summary1.The dynamics and accuracy of sound localization by the barn owl (Tyto alba) were studied by exploiting the natural head-orienting response of the owl to novel sound stimuli. Head orientationExpand
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