Have you ever looked at a photo and been instantly transported back to that moment? The more you look at it, the more nostalgic you begin to feel. Something is happening, but you're not sure why.

We enlisted some help to share with us the reason the brain acts the way it does when looking at imagery. Melina is a Neuropsychologist in Atlanta Georgia who studies how the brain works. As we bombard her with questions, she kindly shares her thoughts and research to explain this mystery of why.