You made a mention in one of the responses here to hyperarousal. I'm guessing, and once again I'm just clarifying, that this would be where they are extra-sensitive to their environment. In a military scenario, you hear about somebody who is very sensitive when they are sleeping, for example. My father talked about that with Vietnam veterans. They were particularly sensitive, as if they were in a field of operations or what not. I'm wondering if you can go into hyperarousal a bit and explain that a little further.
