the circuits that govern all rewarding activities fundamental addiction pathways PLEASURE CENTRES reward circuitry fundamental addiction pathways THE PLEASURE CENTRES pleasure centres reward circuitry reward circuit pleasure centres reward circuit reward circuitry THE PLEASURE CENTRES reward circuitry fundamental addiction pathways reward circuit: reward circuitry pleasure pathway of the brain reward circuit dopamine also supplies pleasure pathway of the brain reward circuitry fundamental addiction pathways reward circuit: reward circuitry PLEASURE CENTRES reward circuit: pleasure centers reward circuitry reward circuit: this representation. reward circuit: reward circuitry reward circuitry pleasure centers the reward circuitry McGill University brain diagrams nucleus accumbens pleasure pathways reward circuit