Vocal sequences suppress spiking in the bat auditory cortex while evoking concomitant steady-state local field potentials

  • The mechanisms by which the mammalian brain copes with information from natural vocalization streams remain poorly understood. This article shows that in highly vocal animals, such as the bat species Carollia perspicillata, the spike activity of auditory cortex neurons does not track the temporal information flow enclosed in fast time-varying vocalization streams emitted by conspecifics. For example, leading syllables of so-called distress sequences (produced by bats subjected to duress) suppress cortical spiking to lagging syllables. Local fields potentials (LFPs) recorded simultaneously to cortical spiking evoked by distress sequences carry multiplexed information, with response suppression occurring in low frequency LFPs (i.e. 2–15 Hz) and steady-state LFPs occurring at frequencies that match the rate of energy fluctuations in the incoming sound streams (i.e. >50 Hz). Such steady-state LFPs could reflect underlying synaptic activity that does not necessarily lead to cortical spiking in response to natural fast time-varying vocal sequences.

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Author:Julio C. Hechavarria-CueriaORCiDGND, Marcel Jerome BeetzORCiDGND, Silvio Macias, Manfred KösslORCiD
URN:urn:nbn:de:hebis:30:3-451226
DOI:https://doi.org/10.1038/srep39226
ISSN:2045-2322
Pubmed Id:https://pubmed.ncbi.nlm.nih.gov/27976691
Parent Title (German):Scientific reports
Publisher:Macmillan Publishers Limited, part of Springer Nature
Place of publication:[London]
Document Type:Article
Language:English
Year of Completion:2016
Year of first Publication:2016
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2017/11/23
Tag:Cortex; Ecophysiology; Neurophysiology
Volume:6
Issue:Art. 39226
Page Number:15
First Page:1
Last Page:15
Note:
This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ © The Author(s) 2016
HeBIS-PPN:42495107X
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Sammlungen:Universitätspublikationen
Open-Access-Publikationsfonds:Biowissenschaften
Licence (German):License LogoCreative Commons - Namensnennung 4.0