It's amazing how a traumatic memory can remain very much alive. It doesn't behave like a regular memory. The memory doesn't decay.

We figure we need to test about 10 more people until we've got solid evidence.

People with PTSD tell me their life is so miserable, they're willing to try anything to feel better. I'm amazed that what seemed to be science fiction just a few years ago is being tested. So this is a really big move forward.