We know that pattern recognition is very important as a concept for the study of  the brain so here we  want to make a test about this field and we are going to use leaves and we want from you to recognize them. So I will show you some leaves, wooden leaves in fact and maybe you can try to recognize the tree. So this is the third one, I will continue to show you some of those constructions and you will be able to see if you can recognize all of them.