Have you ever had a dream that felt so real you thought it actually happened? Our brain can cook up some really vivid images while we sleep, complete with sounds and even emotions. So how do we tell the difference between dreams and real life? We asked dream researcher Tore Nielsen to help us find the answer.

Got a question that you’re dreaming about? Send it to us at BrainsOn.org/contact – we won’t snooze on finding the answer!