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The past decade has brought us jaw-dropping insights about the hidden workings of our brains, in part thanks to a popular brain scan technique called fMRI. But a major new study has revealed that fMRI interpretation has a serious flaw, one that could mean that much of what we’ve learned about our brains this way might need a second look.

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Half of the American preschoolers diagnosed with ADHD are given drugs to treat the symptoms. Is that necessary? Is there another way?

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Neuroscientist Madeline Lancaster generates living models of brain from just a few stem cells.

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What’s it like to have a song inside your head, itching to get out? A neuroscientist and a songwriter compare notes from the frontier of music and science.

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The British neuroscientist Adrian Owen has developed a way to connect with patients in a vegetative state. It’s amazing work with complicated implications.

How to be good at stress | ideas.ted.com

What does it mean to be “good” at stress? Does it mean that you don’t get stressed out? That you stay calm under pressure and bounce back from adversity? Not exactly. Stress researcher Kelly McGonigal shares her surprising findings.

The science of laughter | ideas.ted.com

British cognitive neuroscientist Sophie Scott studies vocal communication. She explains why looking into giggles and mirth is important … and shares ways she makes subjects laugh in the lab.