Just as a curiosity, did the confused episodes last long? I'm sort of a light sleeper but I also have sleep walking/talking tendencies. When I wake up in a sensory-deprivated state, it can take what seems like 5-10 minutes before I'm back to normal. It's like waking up from that dream, but having nothing contradicting the dream you just had, so my mind sort of continues the dream line of reasoning until my logical abilities catch up. Very strange feeling.