Perceptual Learning After Rapidly Alternating Exposure to Taste Compounds: Assessment With Different Indices of Generalization Sánchez Plazas, Jesús Dwyer, Dominic Honey, Robert Brugada Sauras, Isabel de Associative learning Flavor aversion Licking microstructure Exposure to two similar stimuli (AX and BX; e.g., two tastes) reduces the extent to which a conditioned response later established to BX generalizes to AX. This example of perceptual learning is more evident when AX and BX are exposed in an alternating manner (AX, BX, AX, BX,. . ..) than when AX and BX AQ: 4 occurs in separate blocks (e.g., AX, AX,..BX, BX,..). We examined in male rats (N = 126) the impact of rapid alternation to AX and BX on generalization of a taste aversion from BX to AX. Experiment 1 showed that such alternating presentations (with 5-min intervals between AX and BX) reduced generalization relative to blocked exposure; but only as assessed by consumption levels and not by lick cluster size (an index of hedonic reactions). Experiment 1 also showed that the nature of exposure did not affect how A influenced performance to a novel conditioned taste, Y. Experiment 2 replicated the pattern of results involving the different influences of rapidly alternating and blocked exposure on generalization from BX to AX, and showed that this effect was only evident when rats received access to water during the 5-min intervals between AX and BX. These results reinforce parallels between perceptual learning effects in rats and humans, both at empirical and theoretical levels. 2024-04-09T07:39:37Z 2024-04-09T07:39:37Z 2022 journal article Sánchez, J., Dwyer, D. M., Honey, R. C., & de Brugada, I. (2022). Perceptual learning after rapidly alternating exposure to taste compounds: Assessment with different indices of generalization. Journal of Experimental Psychology: Animal Learning and Cognition, 48(3), 169. https://doi.org/10.1037/xan0000333 https://hdl.handle.net/10481/90517 doi.org/10.1037/xan0000333 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional American Psychological Association