Brainstem pathways of reward.
D000818:Animals; D001931:Brain Mapping; D001933:Brain Stem / Q000502:physiology*; D004566:Electrodes; D005116:Extrapyramidal Tracts / Q000502:physiology*; D005260:Female; D008297:Male; D051381:Rats; D012201:Reward; D012653:Self Stimulation; D013997:Time Factors