We all have a collective set of memories, from your first day at school, the smell of your mum’s cooking, to where you were when a significant world event occurred – all of these are what make us who we are.

Food memories

Do you remember what you had for your lunch yesterday? An image of a chicken sandwich comes to mind for me.

I didn’t have to go through all my memory files for this image to appear, it is stored in a very complex network of creating, recalling and storing groups. These networks all work together to ensure that the image of my chicken sandwich from yesterday appears very easily.

This brain-wide process is very complicated and science still doesn’t fully know how the brain organises memory.