title: The pleasure system of the brain and its neurotransmitters.
mesh_terms: D000818:Animals; D001921:Brain / Q000502:physiology*; D002395:Catecholamines / Q000502:physiology; D004298:Dopamine / Q000502:physiology; D004644:Emotions / Q000502:physiology*; D004745:Enkephalins / Q000502:physiology; D006040:Goals; D009042:Motivation; D009434:Neural Pathways / Q000502:physiology; D018377:Neurotransmitter Agents / Q000502:physiology*; D009638:Norepinephrine / Q000502:physiology; D012201:Reward; D012653:Self Stimulation / Q000502:physiology
chemical_list: D002395:Catecholamines; D004745:Enkephalins; D018377:Neurotransmitter Agents; D004298:Dopamine; D009638:Norepinephrine