Squishy, wrinkled, weighing about as much as a cantaloupe, the brain may not be much to look at from the outside. Yet with a network of roughly 86 billion neurons, it generates more impulses daily than all the smartphones on the planet combined.
Scientists can track all that activity with scans. But what does a well-balanced brain actually look like?
Spoiler alert: New research says there’s no universal signature of mental health—or illness.
The limits of a universal biomarker
“A lot of the work in neuroscience is trying to identify some kind of universal biomarker,” said Northeastern University London researcher Haily Merritt...
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