I was interested to hear that Melvyn Bragg had these when he was a youngster, here he is describing them: "I cannot remember before or since being anything like as terrified. I remember the fact of it now, and even a little digging into memory gives off something of the taste of it. I would simply lie in bed waiting for it to happen, screwing up my eyes as tight as possible, hoping that I would be felled by instant, merciful sleep or somehow left alone. When I was, the relief the next morning was momentary before the fear began to build again. What happened was this. Not part of me, but what I was left the boy's body on that bed and went above - it seemed to the corner of the ceiling next to the window. It hovered there. It stayed there. It, that thing, that object, was me. The huddle on the bed was controlled by it. There was no will in the boy's body. There was only, as it were, a holding state uninhabited, save for a possessing aura of terror. Whether the terror was in the body or in that thing which, at times, I thought I could make out and describe, I do not know. But the experience was terror. If the thing moved away then the body would be finished. It would be no more, because that thing not only controlled the body but gave it life. The desperate fear was - would these two fuse again or not? What did this presence want the body to do besides lying inert and being a void? Somehow an invisible helpline would be thrown and the two would come together - and usually by that time I was exhausted and went into sleep of a sort."