Data/hora: 10/06/2024 15:20:12

Provedor de dados: | 56
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.; Britto,L.R.G.; Ferrari,E.A.M.
Data: | 2011-08-01
Ano: | 2011
Palavras-chave: | Amygdala; Nucleus taeniae of the amygdala; Fear conditioning; Zenk; Pigeon.
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 &lt; 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
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000800005
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
Fonte: | info:eu-repo/semantics/openAccess