Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/143
Type: Artigo de periódico
Title: Induction of Zenk protein expression within the nucleus taeniae of the amygdala of pigeons following tone and shock stimulation
Author: BRITO, I.
BRITTO, L.R.G.
FERRARI, E.A.M.
Abstract: In this study, we evaluated the expression of the Zenk protein within the nucleus taeniae of the pigeon&#8217;s amygdala (TnA) after training in a classical aversive conditioning, in order to improve our understanding of its functional role in birds. Thirty-two 18-month-old adult male pigeons (Columba livia), weighing on average 350 g, were trained under different conditions: with tone-shock associations (experimental group; EG); with shock-alone presentations (shock group; SG); with tone-alone presentations (tone group; TG); with exposure to the training chamber without stimulation (context group; CG), and with daily handling (naive group; NG). The number of immunoreactive nuclei was counted in the whole TnA region and is reported as density of Zenk-positive nuclei. This density of Zenk-positive cells in the TnA was significantly greater for the EG, SG and TG than for the CG and NG (P < 0.05). The data indicate an expression of Zenk in the TnA that was driven by experience, supporting the role of this brain area as a critical element for neural processing of aversive stimuli as well as meaningful novel stimuli.
Subject: Amygdala
Nucleus taeniae of the amygdala
Fear conditioning
Zenk
Pigeon
Country: Brasil
Editor: Associação Brasileira de Divulgação Científica
Citation: Brazilian Journal of Medical and Biological Research, v.44, n.8, p.762-766, 2011
Rights: aberto
Identifier DOI: 10.1590/S0100-879X2011007500066
Address: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000800005
http://www.scielo.br/pdf/bjmbr/v44n8/968.pdf
Date Issue: 2011
Appears in Collections:IB - Artigos e Materiais de Revistas Científicas

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