" Dr. Small points out that this atmosphere of manic disruption makes my adrenal gland pump up production of cortisol and adrenaline. In the short run, these stress hormones boost energy levels and augment memory, but over time they actually impair cognition, lead to depression, and alter the neural circuitry in the hippocampus, amygdala, and prefrontal cortex—the brain regions that control mood and thought. Chronic and prolonged techno-brain burnout can even reshape the underlying brain structure. Techno-brain "

― Michael Harris , The End of Absence: Reclaiming What We've Lost in a World of Constant Connection