I'm wondering if anyone else notices spikes of wakefulness that interrupt deep sleep. It happens to about 80% of my deep phases and is most common early in the evening. I have no recollection of these "wakings" and the spike is usually followed by light sleep and then back to deep. I definitely feel better on mornings when I don't have this happen (pretty rare). What's odd is that I don't get random wakings during light and REM- unless I am actually woken up by a kid or the cat or my snoring partner- which I always remember. Any thoughts?