Action Potentials Animals Article Basal Ganglia C57BL mouse Corpus Striatum D2 Diet, High-Fat Male Mice, Inbred C57BL Mice, Obese Movement Neurons Obesity Physical Conditioning, Animal Protein Binding Receptors, Dopamine D2 Weight Gain action potential adverse effects animal animal experiment animal model basal ganglion controlled study corpus striatum diet induced obesity dopamine dopamine 2 receptor exercise