If an individual repeatedly uses an addictive substance, which consequence results in the mesolimbic pathway?

💡 Explanation

Repeated exposure to addictive substances leads to the downregulation of dopamine receptors in the mesolimbic pathway. This occurs because the continuous overstimulation of dopamine release causes cells to reduce their sensitivity to dopamine, therefore reducing the rewarding effects and increasing tolerance, rather than altering receptor phosphorylation, serotonin transport, or GABAergic neuron activity.

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