Animals 10 Mice, Knockout 6 animal 6 article 6 autoreceptor 6 drug effect 6 physiology 6 priority journal 6 Autoreceptors 4 Cocaine 4 Conditioning, Operant 4 Dopamine 4 Dopamine Uptake Inhibitors 4 Electrophysiology 4 Fluoxetine 4 Male 4 Mesencephalon 4 Mice 4 Neurons 4 Receptors, Dopamine D2 4 animal tissue 4 cocaine 4 controlled study 4 dopamine 2 receptor 4 electrophysiology 4 fluoxetine 4 genetics 4 knockout mouse 4 male 4 nerve cell inhibition 4