Respuestas agonísticas en ratas sometidas a frustración
; Martinez, Cristina Susana Otros responsables
Fecha
12/2000
Editorial
Fundación Universitaria Konrad Lorenz
Revista
Revista Latinoamericana de Psicología
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0120-0534
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Español
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Resumen
Las ratas condicionadas a consumir 32% de solución azucarada sufren un efecto de frustración cuando se les cambia la solución a una no preferida (4% ó 2% de la misma solución). Se expresa con una disminución brusca del consumo, mayor actividad, rearing, aumento de corticosterona, etc. comparadas con animales que siempre consumieron la solución menos apetitiva. En tres experimentos estudiamos sus efectos sobre la interacción social. En todos ellos se coloca un congénere en la caja de condicionamiento después de la primera y segunda sesión de cambio del reforzador. Los experimentos 1 y 2 comparan frustrados y controles entre sí, sin y con el reforzador presente respectivamente; el experimento 3, ante un intruso. Los animales frustrados fueron menos dominantes que los controles y tuvieron una mayor activación general en los tres experimentos estudiados.
Rats given access to 32% sucrose in series of daily sessions and then shifted either to 4% or 2% sucrose do not take as much of it as do control animals than have experienced only the less preferred food (consurnmatory successive negative contrast, frustration effect). In 3 experiments we studied the effects on social responses. In all experiments the rats were tested with other rat after the first and second post -shift in the conditioning cage. In Experiment 1 and 2, the frustrate rats and controls were compared, with and without reinforce in present respectively and experiment 3, with an intruder. Frustrated animals showed less dominance responses than controls and had more activation in the three experiments.
Rats given access to 32% sucrose in series of daily sessions and then shifted either to 4% or 2% sucrose do not take as much of it as do control animals than have experienced only the less preferred food (consurnmatory successive negative contrast, frustration effect). In 3 experiments we studied the effects on social responses. In all experiments the rats were tested with other rat after the first and second post -shift in the conditioning cage. In Experiment 1 and 2, the frustrate rats and controls were compared, with and without reinforce in present respectively and experiment 3, with an intruder. Frustrated animals showed less dominance responses than controls and had more activation in the three experiments.
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