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Story summary
- A comprehensive study identifies five major epochs of brain development from infancy to age 90 in nearly 4,000 scans.
- Turning points occur at ages 9, 32, 66, and 83, marking shifts in brain organization.
- The sequence spans childhood through age 9, then adolescence to 32.
- Brain connectivity becomes more efficient across epochs, shaping cognitive performance.
- Later stages show aging-related declines and may relate to life events such as parenthood.
