As organs go, the human brain is an odd one. It’s remarkably big relative to our bodies, for starters. It’s also wrinklier than most, with a complex, folded surface making space for the tens of billions of interconnected neurons that give rise to our species’ unique cognitive powers. Oh, and it’s jiggly — like, really jiggly.

“If you took a brain fresh out of the skull, you’d be a little bit shocked at how friable it is. It almost feels like you’re holding a Jell-O mold,” says UC Berkeley neuroscientist Bob Knight. The UC Newsroom recently visited his lab to learn more about brain injuries: how they happen, how to prevent them, and why some kinds of hits to the head are much worse than others.

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