2) The Brain

• . The brain controls complex behaviour.
• . It is made of billions of interconnected neurones and has different

  regions that carry out different functions.
• . Three of these main regions are the: cerebral cortex, cerebellum and

  medulla.
• Neuroscientists have been able to map the regions of the brain to

  particular functions by:

  studying patients with brain damage

  electrically stimulating different parts of the brain

  • using MRI scanning techniques.
• The complexity and delicacy of the brain makes investigating and

  treating brain disorders very difficult.