How is it that some people see an object as blue, while others say that same object is green? What is the effect of a visual impairment on the brain? And is there anything we can do to restore it? How can I find out which stage of cognitive decline I am in, and how can I prevent Alzheimer’s disease or dementia? Do colours appear the same to everyone? Can I learn from a text by listening to it while I sleep?  What goes wrong in the brain when I lose focus? What happens in the brain when you take psychedelics? When are we able to solve MS? What is already known about long covid and the brain? What happens in the brain with ALS?