Which of the following is a limitation of measuring brain ...

[jjjetplane]

Which of the following is a limitation of measuring brain activity by ERP (event-related potential)?
 
  Much of the activity that occurs in the brain occurs at a depth not measurable
  by the procedure.
  Many people have allergic reactions to the dye that is injected during the
  procedure.
  Because of the hyperactivity of infants, it is extremely difficult to interpret the
  results of the test.
  While it signifies that perception has occurred, interpretation of the
  measurement is not straight-forward.

Question 2

The technique that measures changes in blood flow anywhere in the brain is called
 
  EEG.
  PET.
  fMRI.
  ERP.

[cadimas]

Answer to Question 1

While it signifies that perception has occurred, interpretation of the
measurement is not straight-forward.

Answer to Question 2

fMRI.