TORRECILLA Norma Mariana
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Efectos del estrés neonatal crónico sobre la frustración
RUETTI E.; GONZALEZ JATUFF A; TORRECILLA N.M.; PEREZ DALTO B.; JUSTEL N.
Jornada; XV Jornadas de Investigación de la Facultad de Psicología. Facultad de Psicología. Universidad de Buenos Aires; 2008
Facultad de Psicología, Universidad de Buenos Aires
Mild neonatal stress has been proving effective stimulating physical and neurochemical development, reducing behavioral and hormonal responsiveness to an aversive stimulus. In the present study adult male rats subjected to neonatal chronic mild stress were exposed to two experimental situations related to frustrative nonreward: consummatory successive negative contrast (cSNC) and consummatory extinction (cE). Stressed rats that had access to a 32% sucrose solution and were then downshifted to a 4% solution exhibited a faster recovery from cSNC (Experiment 1), and a faster cE when downshifted to an empty tube, relative to nonstressed control rats (Experiment 2). These findings suggest that rats chronically exposed to neonatal mild stress quickly adjust their behavior in stressful situations involving the surprising omission of an expected reward. These results are discussed in relation to Amsel´s frustration theory