Taste aversion learning during successive negative contrast.

Previous experiments found that acceptance of saccharin by rats was reduced if they had prior experience of sucrose or some other highly palatable solution. This study tested whether such successive negative contrast (SNC) effects involve acquisition of an aversion to the new taste. In three experiments, rats were switched from sucrose exposure in Stage 1 to a less palatable solution containing a new taste in Stage 2.

Switching from sucrose to saccharin: Extended successive negative contrast is not maintained by hedonic changes.

Previous experiments found that acceptance of saccharin by rats was reduced if they had prior experience of sucrose or some other highly palatable solution. This reduction in saccharin consumption was particularly extended after a switch from sucrose. On the surface, this seems to correspond to a successive negative contrast (SNC) effect.

Does drinking saccharin weaken an association of sweet with calories? Pre-exposure effects in flavor preference learning.

The main aim of this experiment was to examine the claim that exposure to non-nutritive sweeteners weakens the formation of a sweet-calorie association. Three groups of food-deprived rats received training in which they drank an almond-flavored maltodextrin and saccharin solution. A final test phase assessed their preference for almond.

Switching from Sugar- to Artificially-Sweetened Beverages: A 12-Week Trial.

Background: Consumption of sugar-sweetened beverages (SSBs) forms the primary source of added sugar intake and can increase the risk of metabolic disease. Evidence from studies in humans and rodents also indicates that consumption of SSBs can impair performance on cognitive tests, but that removing SSB access can ameliorate these effects.

Methods: The present study used an unblinded 3-group parallel design to assess the effects of a 12-week intervention in which young healthy adults (mean age = 22.

Unpredictability of access to a high fat/high sugar food can increase rats' intake.

When food is readily available, human self-imposed restrictions on consumption of palatable foods can lead to binge eating. Rodent models of human bingeing have produced increased intakes. However, access to highly palatable foods in such models has been largely predictable.