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Stock Photo: BRAIN REWARD SYSTEM. The brain reward pathway is indispensable to the survival because it associates the execution of vital functions with strong sensations of satisfaction. The ventral tegmental area VTA, receives informations which indicate the level of satisfaction, then analysis and transmits this information thanks to a chemical messenger, the dopamine, to the nucleus accumbens, the septum, the amygdala and the prefrontal cortex. The nucleus accumbens acts on the striatum which commands our