A 15-year-old girl with epilepsy visits a physician for testing

A 15-year-old girl with epilepsy visits a physician for testing. The physician uses electroencephalography to study her brain waves during various activities. Which of the following is most likely to stimulate the greatest increase in brain activity in this girl?

  1. Hyperventilation
  2. Hypoventilation
  3. Hyperventilation plus flashing lights
  4. Hypoventilation plus flashing lights