Beat encoding at mistuned octaves within single electrosensory neurons.

ABSTRACT: Beats are slow periodic amplitude modulations resulting from the superposition of two spectrally close periodic signals. The difference frequency between the signals sets the frequency of the beat. A field study in the electric fish Apteronotus rostratus showed the behavioral relevance of very high difference frequencies. Contrary to expectations from previous studies, our electrophysiological data show strong responses of p-type electroreceptor afferents whenever the difference frequency approaches integer multiples (mistuned octaves) of the fish's own electric field frequency (carrier). Mathematical reasoning and simulations show that common approaches to extract amplitude modulations, such as Hilbert transform or half-wave rectification, are not sufficient to explain the response

SUBMITTER: Barayeu A 

PROVIDER: S-EPMC10331418 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature