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Each time a child picks up a screen device, not one but many changes occur in the brain that lead to overstimulation and hyperarousal. Reward pathways are strongly activated which eventually become desensitized. Large amounts of dopamine are released. Blue-toned light (inherent to screens) desynchonizes the body clock and suppresses melatonin, the sleep signal. Vivid colors and rapid changes in movement or page loads overwhelm the visual system. Enormous amounts of information are taken in and processed, draining mental reserves and fracturing attention. Media multi-tasking and interactivit
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