Crossword clues for It can test your brain: Abbr. 3 lettersAnswerClueEEGBrain test (abbr.)EEGBrain wave test (abbr.)MRIIt can test your brain: Abbr.EEGYou'll need brains for this test: Abbr.EEGSBrain tests (abbr.)EEGSTests for what's going on inside the brain (abbr.)