Scientists have announced they are now able to 'film' the brain as it forms memories. Researchers were able to give mRNA molecules, which are crucial to forming memories, fluorescent "tags", so they could be watched more easily. The breakthrough technique means that scientists were able to look inside neurons without destroying them. Also here: http://medicalxpress.com/news/2014-01-breakthrough-scientists-molecules-morph-memories.html Scientists at the Albert Einstein College of Medicine at Yeshiva University have developed a breakthrough technique that has allowed them to 'film' the brain as it forms new memories. The incredible video shows fluorescent tagged molecules moving in real time as they form memories inside a mouse brain. The researchers think their 'mouse model' could have major implications for understanding of how the brain works.