Decision Making Flashcards
General model
Different brain areas
Prediction of consequences
Generation of action
Prefrontal & striatum
Eyes movements
Découverte des “centres du plaisir”
Olds & Milner, 1954
Autostimulation
Electrodes dans les neurones dopaminergiques
Penfield
Extreme pleasure when stimulating dopamin system
Dopamine pathway :
location?
2 groups of nuclei?
Midbrain
Ventral Tegmentum Area
Substantia Nigra
Projections of substantia nigra
Putamen
Caudate nucleus
(Dorsal striatum)
Projections of VTA
Nucleus Acumbens (Ventral striatum)
Prefrontal Cx
[Amygdala - hippocampus]
Striatum
Present in all species
→ Same neural substract of rewarding
L’addiction ?
L’addiction implique le système dopaminergique en induisant une désadaptation du système de récompense
(système mésocorticolimbique )
Drugs
Dopamine always involved
Penfield
Wilder Graves Penfield
January 26, 1891 – April 5, 1976
was a pioneering neurosurgeon once dubbed “the greatest living Canadian”.[2] He expanded brain surgery’s methods and techniques, including mapping the functions of various regions of the brain such as the cortical homunculus. His scientific contributions on neural stimulation expand across a variety of topics including hallucinations, illusions, and deja vu. Penfield devoted a lot of his thinking to mental processes, including contemplation of whether there was any scientific basis for the existence of the human soul.[2]
conditioning
