The reward system is a collection of brain structures and neural pathways that are responsible for reward-related cognition, including associative learning, motivation and wanting, craving and pleasure. These areas from the brain are activated with the process of food, sex or religion. That means, eating meals, have sex and have a spiritual experience stimuli the pleasure center. This develops a good attitude and determination to receive positive reinforcement.
Location of the reward system.
It is located in the front of the brain the prefrontal medial cortex area, just behind the forehead. That control of abstract thinking and thought analysis, social behavior. The Acumen nucleus is a region in the basal forebrain rostral to the pre optic area of the hypothalamus. As a whole, the nucleus Accumben has a significant role in the cognitive processing of aversion, motivation reward (pleasure and positive reinforcement).
There is research in a religious group of 20 persons; that show output of wellness and pleasure doing the same three activities (eat, sex and religion). That demonstrated the functionality of the reward system.
The reward pathway.
This area of reward and reinforcement. The abuse of drugs induces neuroplasticity in the natural reward pathway, especially the nucleus Accumbens (NAc) thereby causing development. GABA is one of the main neurotransmitter.