INVESTIGADORES
TORRECILLA Norma Mariana
congresos y reuniones científicas
Título:
CHRONIC NEONATAL STRESS AND FRUSTRATION
Autor/es:
RUETTI E.; JUSTEL N.; GONZALEZ JATUFF A; TORRECILLA N.M.; MUSTACA A.
Lugar:
Buenos Aires
Reunión:
Otro; 14th Biennial Meeting International Society for Comparative Psychology Argentinean Scientific; 2008
Institución organizadora:
International Society for Comparative Psychology and Argentinean Scientific Society
Resumen:
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 AmselĀ“s frustration theory. Key words: neonatal stress, contrast, extinction, rats
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