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neuroscience

Human Brains Have Evolved Unique ‘Feel-Good’ Circuits

A comparison of brain tissue from monkeys, chimps and humans suggests that our brains produce the chemical messenger dopamine, which plays a major role in pleasure and rewards, far differently. A brain system involved in everything from addiction to autism appears to have evolved differently in people than in great …

Why No Adult Can Remember Infancy – Business Insider

Also known as “infantile amnesia.” Unlike the proverbial elephants, babies always forget. Infants’ memories may be wiped clean by the genesis of new brain cells, a study in rodents suggests. The findings offer an explanation for why people can’t recall memories from early childhood, a century-old mystery. The study’s authors …

No Rest For Your Sleeping Brain : Shots – Health News : NPR

There’s new evidence that the brain’s activity during sleep isn’t random. And the findings could help explain why the brain consumes so much energy even when it appears to be resting. “There is something that’s going on in a very structured manner during rest and during sleep,” says Stanford neurologist Dr. …