“…[Middle-aged] people with high levels of cortisol [from stress] had lower scores on tests of memory/thinking skills…also linked to lower total brain volume.”

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“…how long humans and other warm-blooded animals live–and when they reach sexual maturity– may have more to do with their brain than their body…it is not animals with larger bodies or slower metabolic rates that live longer; it is animals with more neurons in the cerebral cortex…”

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“…older adults exhibit greater eye movements, but this does not correlate with an increase in brain activity patterns…while the eyes and brain are taking in environmental information, the link to creating memories of what is seen weakens over a life time.”

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