Heavy smartphone use among adolescents isn't just a matter of habits: it has become a central topic in neuroscience. Today, we know that continuous interaction with digital devices isn't neutral—it directly engages the brain's circuits for motivation and pleasure. At the heart of the phenomenon is the mesolimbic reward system, a neural network that regulates learning, drive to action, and the sensation of gratification. Every notification, message, or "like" can trigger the r
