Neuronal coding of multiscale temporal features in communication sequences within the bat auditory cortex

  • Experimental evidence supports that cortical oscillations represent multiscale temporal modulations existent in natural stimuli, yet little is known about the processing of these multiple timescales at a neuronal level. Here, using extracellular recordings from the auditory cortex (AC) of awake bats (Carollia perspicillata), we show the existence of three neuronal types which represent different levels of the temporal structure of conspecific vocalizations, and therefore constitute direct evidence of multiscale temporal processing of naturalistic stimuli by neurons in the AC. These neuronal subpopulations synchronize differently to local-field potentials, particularly in theta- and high frequency bands, and are informative to a different degree in terms of their spike rate. Interestingly, we also observed that both low and high frequency cortical oscillations can be highly informative about the listened calls. Our results suggest that multiscale neuronal processing allows for the precise and non-redundant representation of natural vocalizations in the AC.

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Author:Francisco García-RosalesORCiDGND, Marcel Jerome BeetzORCiDGND, Yuranny Cabral-CalderinORCiD, Manfred KösslORCiD, Julio Cesar Hechavarria-CueriaORCiDGND
Pubmed Id:
Parent Title (English):Communications biology
Publisher:Springer Nature
Place of publication:London
Document Type:Article
Year of Completion:2018
Date of first Publication:2018/11/20
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2018/12/06
Tag:Cortex; Neural circuits; Sensory processing
Issue:Art. 200
Page Number:14
First Page:1
Last Page:14
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Institutes:Biowissenschaften / Biowissenschaften
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Licence (German):License LogoCreative Commons - Namensnennung 4.0