The nature of training in flavor preference learning determines the underlying associative structure
Metadatos
Mostrar el registro completo del ítemEditorial
Elsevier
Materia
Flavor preference Devaluation Sensory-Specific Satiety
Fecha
2024-06-26Referencia bibliográfica
González, A. & Sánchez, J. & Brugada, I. 220 (2024) 105074. [https://doi.org/10.1016/j.beproc.2024.105074]
Patrocinador
grants PGC2018–095965-B-I00 & PID2022–136219NB-I00 funded by MCIN & MICIU AEI/ 10.13039/ 501100011033 and by “ERDF A way of making Europe”; Isabel de Brugada and by the research doctoral grant (grant number: FPU16/ 01767)Resumen
Pairing a palatable flavor (US) with an initially neutral flavor cue (CS) results in an acquired conditioned
preference for the latter. Two main associations have been proposed to explain the acquisition of flavor preferences:
Flavor-Flavor and Flavor-Nutrient learning. Although the hedonic reaction triggered by US consumption
has also been suggested as a possible additional component underlying acquired flavor preference, this issue has
received little attention. Here we explored whether the amount of training to the CS-US compound can favor the
formation of a Flavor-Hedonic reaction association using rats as subjects and sucrose as the US. We expected that
the more exposure to the CS-US compound, the stronger the S-R type association. Since S-R associations are not
sensitive to devaluation procedures, we used a Sensory-Specific Satiety procedure to devalue the US after conditioning
and then measured preferences for the CS. On Experiment 1 with a short restrictive training (classic
procedure), preference for the CS was decreased after devaluation of the US compared to the control condition.
On Experiment 2, with short unrestrictive training, preference for the CS was again weakened. Experiment 3 with
a long unrestrictive training, rats expressed preference for the CS regardless of the devaluation procedure. These
results suggest that, as with an instrumental paradigm, extensive training in flavor preference learning undermines
the US devaluation effect.