Auditory fear conditioning modifies steady-state evoked potentials in the rat inferior colliculus

Author:

Lockmann André Luiz Vieira1,Mourão Flávio Afonso Gonçalves1,Moraes Marcio Flávio Dutra1

Affiliation:

1. Núcleo de Neurociências, Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil

Abstract

Local field potential oscillations in the inferior colliculus follow the amplitude envelope of an amplitude-modulated tone, originating a neural response called the steady-state evoked potential. We show that auditory fear conditioning of an amplitude-modulated tone modifies two parameters of the steady-state evoked potentials in the inferior colliculus: first the phase to which the evoked oscillation couples to the amplitude-modulated tone shifts; subsequently, the evoked oscillation power increases along with its coherence with the amplitude-modulated tone.

Funder

Fundação de Amparo à Pesquisa do Estado de Minas Gerais (Foundation for Research Support of the State of Minas Gerais)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Coordination for the Improvement of Higher Education Personnel)

Ministry of Science, Technology and Innovation | Conselho Nacional de Desenvolvimento Científico e Tecnológico (National Council for Scientific and Technological Development)

Publisher

American Physiological Society

Subject

Physiology,General Neuroscience

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