info:eu-repo/semantics/article
Can contextual cues control consummatory successive negative contrast?
Fecha
2008-05Registro en:
Daniel, Alan; Wood, Michael; Pellegrini, Santiago; Norris, Jacob; Papini, Mauricio Roberto; Can contextual cues control consummatory successive negative contrast?; Academic Press; Learning And Motivation; 39; 2; 5-2008; 146-162
0023-9690
CONICET Digital
CONICET
Autor
Daniel, Alan
Wood, Michael
Pellegrini, Santiago
Norris, Jacob
Papini, Mauricio Roberto
Resumen
Rats exposed to incentive downshift show behavioral deterioration. This phenomenon, called successive negative contrast (SNC), occurs in instrumental and consummatory responses (iSNC, cSNC).Whereas iSNC is related to the violation of reward expectancies retrieved in anticipation of the goal (cued-recall), cSNC involves reward rejection and may require only recognition memory retrieved at consumption. The three within-subject experiments reported here suggest that cued-recall memory can also operate in cSNC under some conditions. A small but significant cSNC effect was obtained when animals were exposed to the conditioning context during an average 90-s interval before the introduction of the incentive (either 16% or 2% sucrose solutions), rather than being given immediate access to the sucrose upon entry into the context (Experiment 1). Neither simultaneous contrast (Experiment 2) nor simple sequential effects (Experiment 3) contribute to this within-subject version of cSNC. These results suggest that cSNC can be shifted to a cued-recall mode with appropriate training parameters.