Data/hora: 16/06/2024 08:49:58

Provedor de dados: | 56
País: | Brazil
Título: | Effect of repeated restraint stress on memory in different tasks
Autores: | Gamaro,G.D.; Michalowski,M.B.; Catelli,D.H.; Xavier,M.H.; Dalmaz,C.
Data: | 1999-03-01
Ano: | 1999
Palavras-chave: | Chronic stress; Memory; Inhibitory avoidance; Two-way active avoidance; Open field.
Resumo: | The present study investigated the effect of repeated stress applied to female rats on memory evaluated by three behavioral tasks: two-way shuttle avoidance, inhibitory avoidance and habituation to an open field. Repeated stress had different effects on rat behavior when different tasks were considered. In the two-way active avoidance test the stressed animals presented memory of the task, but their memory scores were impaired when compared to all other groups. In the habituation to the open field, only the control group showed a significant difference in the number of rearings between training and testing sessions, which is interpreted as an adequate memory of the task. In the handled and chronically stressed animals, on the other hand, no memory was observed, suggesting that even a very mild repeated stress would be enough to alter habituation to this task. The performance in the inhibitory avoidance task presented no significant differences between groups. The findings suggest that repeated restraint stress might induce cognitive impairments that are dependent on the task and on stress intensity.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000300015
Editor: | Associação Brasileira de Divulgação Científica
Relação: | 10.1590/S0100-879X1999000300015
Formato: | text/html
Fonte: | Brazilian Journal of Medical and Biological Research  v.32 n.3 1999
Fonte: | info:eu-repo/semantics/openAccess