Petrovich Gorica D, Ross Cali A, Gallagher Michela, Holland Peter C
Department of Psychological and Brain Sciences, Johns Hopkins University, 3400 North Charles St., Baltimore, MD 21218, United States.
Physiol Behav. 2007 Feb 28;90(2-3):362-7. doi: 10.1016/j.physbeh.2006.09.031. Epub 2006 Oct 31.
Explicit cues associated with food consumption when hunger prevails will enhance eating when they are subsequently presented under conditions of satiety. Here we examined whether contextual conditioned stimuli (CSs) paired with consumption of food pellets while rats were food-deprived would enhance consumption of this food in rats that were not food-deprived. The conditioning context enhanced rats' consumption of the training food, but it did not change their consumption of the familiar, lab chow. These results show that the contextual CSs, like discrete cues, could modulate food consumption in a CS-potentiated eating paradigm. Furthermore, the data suggest that CS-potentiation of eating does not induce a general motivation to eat, akin to hunger, but instead more likely produces a more specific motivational state, akin to craving.
当饥饿占主导时，与食物消耗相关的明确线索在随后饱腹感条件下出现时会增加进食量。在此，我们研究了在大鼠处于食物剥夺状态时，与食用食丸配对的情境条件刺激（CSs）是否会增加未处于食物剥夺状态的大鼠对这种食物的消耗量。条件化情境增加了大鼠对训练食物的消耗量，但并未改变它们对熟悉的实验室饲料的消耗量。这些结果表明，情境性CSs与离散线索一样，能够在CS增强进食范式中调节食物消耗。此外，数据表明，CS增强进食并不会引发类似于饥饿的一般性进食动机，而是更有可能产生一种类似于渴望的更特定的动机状态。
