Final answer:
The limbic system, specifically the reward system, is implicated in addiction and creates reinforcement of pleasure and the 'high' associated with addictive behaviors.
Step-by-step explanation:
The limbic system, which includes structures such as the amygdala and hippocampus, is implicated in addiction. Specifically, the reward system within the limbic system is responsible for creating reinforcement of pleasure and the 'high' associated with addictive behaviors. The release of the neurotransmitter dopamine in the reward system plays a crucial role in addiction.