The brain

• What is the brain made up of?

  Billions of interconnected nerve cells
• What functions does the brain perform?

  Holds thoughts, memories, and complex behaviors
• How does the brain influence our behaviors?

  It decides actions like clothing choices and reading
• What are the main regions of the brain and their functions?

  • Cerebral cortex: consciousness, intelligence, memory, language, senses
  • Cerebellum: balance and muscle coordination
  • Hypothalamus: regulates body temperature and signals pituitary gland
  • Brain stem: connects brain to spinal cord, controls unconscious activities
• What is the outer layer of the brain called?

  Cerebral cortex
• What does the left hemisphere of the brain control?

  Muscles on the right side of the body
• What does the right hemisphere of the brain control?

  Muscles on the left side of the body
• What is the function of the cerebellum?

  Controls balance and muscle coordination
• What does the hypothalamus regulate?

  Body temperature and signals to the pituitary gland
• What connects the brain to the spinal cord?

  Brain stem
• What does the medulla control?

  Unconscious activities like breathing
• How do scientists study the brain?

  By studying brain damage and using stimulation techniques
• What can studying a stroke victim reveal?

  Which brain region is responsible for hearing
• What happens when a specific brain region is electrically stimulated?

  It may cause muscle contraction or sensory changes
• What are CT scans used for?

  Seeing which areas of the brain are damaged
• What do PET and MRI scans measure?

  Underlying activity of the brain
• What happens to brain activity when shown sad images in an MRI?

  Certain parts appear brighter due to sadness
• Why is treating the brain difficult?

  Complexity, fragility, and range of issues
• What types of problems can affect the brain?

  Tumors, infections, trauma, mental health issues
• Why is surgery on the brain challenging?

  It's encased in the skull and fragile
• Why are drugs difficult to use for brain treatment?

  We don't fully understand brain processes
• What is the main focus of the video?

  The brain and its functions
• The brain