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2015 ; 86
(1
): 17-27
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Sound Localization Strategies in Three Predators
#MMPMID26398572
Carr CE
; Christensen-Dalsgaard J
Brain Behav Evol
2015[Sep]; 86
(1
): 17-27
PMID26398572
show ga
In this paper, we compare some of the neural strategies for sound localization
and encoding interaural time differences (ITDs) in three predatory species of
Reptilia, alligators, barn owls and geckos. Birds and crocodilians are sister
groups among the extant archosaurs, while geckos are lepidosaurs. Despite the
similar organization of their auditory systems, archosaurs and lizards use
different strategies for encoding the ITDs that underlie localization of sound in
azimuth. Barn owls encode ITD information using a place map, which is composed of
neurons serving as labeled lines tuned for preferred spatial locations, while
geckos may use a meter strategy or population code composed of broadly sensitive
neurons that represent ITD via changes in the firing rate.
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