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Neurotransmitters and Reinforcing Behaviors
Love and attachment may involve the opioid and serotonin systems; gambling may be linked to serotonin and norepinephrine. Dopamine release in the nucleus accumbens and ventral segmental area is the common pathway for all reinforcing drugs and behaviors, connecting to the prefrontal cortex. Dopamine signifies the importance of a behavior for survival, prompting attention towards it.