Ok, so this is wicked cool.
http://nautil.us/issue/6/secret-codes/safecracking-the-brain

Using Turing’s frequency analysis tests, researchers at UPenn are figuring out how to decrypt brain signals. Imagine the usefulness if they were to put cryptanalysts in to an fMRI to monitor their brain activity… Seems you could crack the process that people use to make logical-intuitive leaps?