1. Temporal and emotional factors related to electrical self-stimulation of the limbic system;Brady,1957
2. Positive reinforcement by intracerebral stimulation in the monkey;Bursten;J. comp. physiol. Psychol.,1958
3. Evaluation of seven years experience with depth electrode studies in human patients;Heath,1960
4. Selbstreizung des Gehirns im Tierversuch;Jung;Dtsch. med. Wschr.,1958
5. Learning motivated by subcortical stimulation;Lilly,1960