Can contextual cues control consummatory successive negative contrast?

Autor: Santiago Pellegrini, Mauricio R. Papini, Jacob N. Norris, Alan M. Daniel, Michael D. Wood
Jazyk: angličtina
Rok vydání: 2008
Předmět:
Popis: 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. Fil: Daniel, Alan. Texas Christian University; Estados Unidos Fil: Wood, Michael. Texas Christian University; Estados Unidos Fil: Pellegrini, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina Fil: Norris, Jacob. Texas Christian University; Estados Unidos Fil: Papini, Mauricio Roberto. Texas Christian University; Estados Unidos
Databáze: OpenAIRE