This test consisted of a 2-bottle procedure in which mice were given the choice between consuming water or a 1% sucrose solution according to previously described method with modification . In brief, animals were singly housed in a cage that had two drinking bottles. One of the bottles had water, while the other bottle had a 1% sucrose solution. Water and sucrose consumption was measured the following day (8:00 A.M.). The position of the sucrose bottle was counterbalanced (left versus right) across the different cages to control for potential side-preference bias.