Efficient encoding of spectrotemporal information for bat echolocation.

ABSTRACT: In most animals, natural stimuli are characterized by a high degree of redundancy, limiting the ensemble of ecologically valid stimuli to a significantly reduced subspace of the representation space. Neural encodings can exploit this redundancy and increase sensing efficiency by generating low-dimensional representations that retain all information essential to support behavior. In this study, we investigate whether such an efficient encoding can be found to support a broad range of echolocation tasks in bats. Starting from an ensemble of echo signals collected with a biomimetic sonar system in natural indoor and outdoor environments, we use independent component analysis to derive a low-dimensional encoding of the output of a cochlear model. We show that this compressive encoding retains

SUBMITTER: Chitradurga Achutha A 

PROVIDER: S-EPMC8270447 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature