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Provedor de dados:  BJMBR
País:  Brazil
Título:  Induction of Zenk protein expression within the nucleus taeniae of the amygdala of pigeons following tone and shock stimulation
Autores:  Brito,I.
Data:  2011-08-01
Ano:  2011
Palavras-chave:  Amygdala
Nucleus taeniae of the amygdala
Fear conditioning
Resumo:  In this study, we evaluated the expression of the Zenk protein within the nucleus taeniae of the pigeon’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.
Tipo:  Info:eu-repo/semantics/other
Idioma:  Inglês
Editor:  Associação Brasileira de Divulgação Científica
Relação:  10.1590/S0100-879X2011007500066
Formato:  text/html
Fonte:  Brazilian Journal of Medical and Biological Research v.44 n.8 2011
Direitos:  info:eu-repo/semantics/openAccess

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