Diamantopoulou, A. Stamatakis, A. Panagiotaropoulos, T. Stylianopoulou, F., Reward or its denial during the neonatal period affects adult spatial memory and hippocampal phosphorylated cAMP response element-binding protein levels of both the neonatal and adult rat, AIMS Neuroscience, (181), 89-99, 2011,