Journal
BEHAVIOURAL PROCESSES
Volume 90, Issue 2, Pages 155-160Publisher
ELSEVIER
DOI: 10.1016/j.beproc.2012.01.003
Keywords
Negative contrast; Extinction; Isolation; Anxiety; Rats
Categories
Funding
- CONICET
- Agencia de Promocion y Desarrollo [PICT 25335/04, PICT 38020/05]
- Secretaria de Ciencia y Tecnica
- UBACYT, UBA, Argentina [P002]
Ask authors/readers for more resources
In consummatory successive negative contrast (cSNC), when rats receive 32% of sweetened water and are unexpectedly exposed to 4% of the same solution, they consume less than those who received 4% regularly. In consummatory extinction (cE), rats receiving a 32% or 4% sugar solution stop lapping when presented with an empty tube. In both cases, these situations trigger an aversive emotional reaction similar to fear and anxiety called frustration or negative contrast effect. Isolation conditions in adulthood increase anxiety responses. We describe an experiment in which isolated or grouped rats in adulthood are evaluated in an elevated plus maze (EPM), in cSNC and cE. Results show that rats in groups express less anxiety and activity in EPM and more persistence in cE than isolated rats. There are no differences between the two housing conditions in cSNC. We discuss these results on the basis of frustration theories. (c) 2012 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available