Big Question: How do our brains imagine things?

Now, we love to think big at Newsround and you guys often ask us the biggest questions out there.

This week's is from Year 6 at Hamstel Junior School, who want to know how do our brains imagine? Well, we've got two of the best in the business to answer, Dr. Chris and Dr Xand from Operation Ouch.

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The Big Question: Send us your questions