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This is Scientific American 60 Second Science. I'm Suzanne Bard. The human brain is remarkably

adaptable, constantly being shaped by life experience. A striking example is that in blind people,

the brain's visual cortex is repurposed for auditory tasks, such as detecting motion and pinpointing where

a sound is coming from. But its adopted functions could be even more complex.

And the question is, well, how much can this part of the brain change its function and people

who are born blind? Johns Hopkins' cognitive neuroscientist Marina Bedney. She and her team had blind and sighted volunteers

listened to audio clips from entertaining movies while undergoing functional MRI scans of their

brains. The goal was to find out if among blind people, the visual cortex is activated consistently

for complex auditory tasks.

So we take brain activity in one person and we correlate it to brain activity in another person.

It gives you a way to directly compare how similar the processing of two brains is

when they're listening to a given stimulus.

And so that can tell us, for example, whether the visual cortices of different blind people

are doing the same thing at the same time.

The result?

You get massive synchrony over something like 65% of the occipital lobe, which is a lot of

cortical territory.

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