What effect does cyanide have on the brain? How does stress affect your brain? Can you feel pain in your brain? How can I find out which stage of cognitive decline I am in, and how can I prevent Alzheimer’s disease or dementia? How is it that some people see an object as blue, while others say that same object is green? Why do brain tissues have different colours? Why are you grumpy after a bad night of sleep? What happens in the brain when you take psychedelics? What is the effect of a visual impairment on the brain? And is there anything we can do to restore it? Why do some people remember things better than other people?