Do the male and female brain differ? Are there people or animals with more or fewer than two brain hemispheres? Are emotions experienced in the heart or the brain? Does a 14T MRI scanner make more noise than a 3T MRI scanner? Is the brain more or less active during sleep? What happens in the brain when you feel ‘confused’? Why is sleep so essential? What is already known about long covid and the brain? Do colours appear the same to everyone? What is fainting?