Vocal Sequences Suppress Spiking in the Bat Auditory Cortex While Evoking Concomitant Steady-state Local Field Potentials

Overview

Journal Sci Rep

Specialty Science

Date 2016 Dec 16

PMID 27976691

Citations 16

Authors

Julio C Hechavarria

M Jerome Beetz

Silvio Macias

Manfred Kossl

Affiliations

Soon will be listed here.

Abstract

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.

Citing Articles

Oscillatory Waveform Shape and Temporal Spike Correlations Differ across Bat Frontal and Auditory Cortex.

Garcia-Rosales F, Schaworonkow N, Hechavarria J J Neurosci. 2024; 44(10).

PMID: 38262724 PMC: 10919256. DOI: 10.1523/JNEUROSCI.1236-23.2023.

The prefrontal cortex of the Mexican free-tailed bat is more selective to communication calls than primary auditory cortex.

Macias S, Bakshi K, Troyer T, Smotherman M J Neurophysiol. 2022; 128(3):634-648.

PMID: 35975923 PMC: 9448334. DOI: 10.1152/jn.00436.2021.

Neural Processing of Naturalistic Echolocation Signals in Bats.

Beetz M, Hechavarria J Front Neural Circuits. 2022; 16:899370.

PMID: 35664459 PMC: 9157489. DOI: 10.3389/fncir.2022.899370.

Faster Repetition Rate Sharpens the Cortical Representation of Echo Streams in Echolocating Bats.

Macias S, Bakshi K, Smotherman M eNeuro. 2021; 9(1).

PMID: 34903526 PMC: 8856701. DOI: 10.1523/ENEURO.0410-21.2021.

Male bats call more than females in a distressful context.

Gonzalez-Palomares E, Lopez-Jury L, Wetekam J, Kiai A, Garcia-Rosales F, Hechavarria J R Soc Open Sci. 2021; 8(5):202336.

PMID: 34040789 PMC: 8113905. DOI: 10.1098/rsos.202336.

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