Are emotions experienced in the heart or the brain? How does stress affect your brain? What is the purpose of brain research? What is the effect of a visual impairment on the brain? And is there anything we can do to restore it? Why don’t we use stem cell therapy for MS? How is a neuron made?  Is the brain more or less active during sleep? What effect does cyanide have on the brain? Are there people or animals with more or fewer than two brain hemispheres? Is dopamine good for you and serotonin bad?