Town, Stephen M;
Bizley, Jennifer K;
(2022)
Sound Localization of World and Head-Centered Space in Ferrets.
The Journal of Neuroscience
, 42
(22)
pp. 4580-4593.
10.1523/jneurosci.0291-22.2022.
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Abstract
The location of sounds can be described in multiple coordinate systems that are defined relative to ourselves, or the world around us. Evidence from neural recordings in animals point towards the existence of both head-centered and world-centered representations of sound location in the brain; however, it is unclear whether such neural representations have perceptual correlates in the sound localization abilities of non-human listeners. Here, we establish novel behavioral tests to determine the coordinate systems in which ferrets can localize sounds. We found that ferrets could learn to discriminate between sound locations that were fixed in either world-centered or head-centered space, across wide variations in sound location in the alternative coordinate system. Using probe sounds to assess broader generalization of spatial hearing, we demonstrated that in both head and world-centered tasks, animals used continuous maps of auditory space to guide behavior. Single trial responses of individual animals were sufficiently informative that we could then model sound localization using speaker position in specific coordinate systems and accurately predict ferrets’ actions in held-out data. Our results indicate that an animal model in which neurons are known to be tuned to sound location in egocentric and allocentric reference frames can also localize sounds in multiple head and world-centered spaces.
Type: | Article |
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Title: | Sound Localization of World and Head-Centered Space in Ferrets |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1523/jneurosci.0291-22.2022 |
Publisher version: | https://doi.org/10.1523/JNEUROSCI.0291-22.2022 |
Language: | English |
Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. // For the purpose of open access, the author has applied a CC BY public copyright licence to any Author Accepted Manuscript version arising from this submission. |
UCL classification: | UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > The Ear Institute UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL |
URI: | https://discovery.ucl.ac.uk/id/eprint/10148410 |
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