What is the purpose of brain research? What is the ‘brain freeze’ sensation when eating or drinking something cold? Do colours appear the same to everyone? How does speaking multiple languages impact the brain? Are there people or animals with more or fewer than two brain hemispheres? Is it true that you can be ‘left-brained’ or ‘right-brained’? How does stress affect your brain? How does your brain know that you want to move? Is the brain more or less active during sleep? Can you feel pain in your brain?