There is a form of communication discovered by Australian researcher David John Oates which he has dubbed as Reverse Speech. Reverse Speech can be heard by taking recorded statements and reversing them to locate the messages produced by the unconscious mind.

Electroencephalograph (EEG) tests have shown that brain activity alters significantly when Reverse Speech occurs. Speech reversals can be found in any language. The uncovering of this embedded information, amongst the gibberish in reverse, can and does reveal the true beliefs, thoughts, and knowledge of ones communication.

It can be said that Reverse Speech is the ultimate truth detector. Speech reversals will add to information left out in forward speech, and negate forward speech with the truth if a lie is told. A speech reversal can occur even if someone is talking about one subject, but thinking of another. Visit Backward State to hear hundreds of examples of reverse speech; http://www.backwardstate.com