[delsarto]

Doesn't even have to be that serious. My young son went off on a sleep walk once, came in speaking complete gibberish (like a random sort on a dictionary) but in a totally normal rhythm and cadence. After I regained composure and figured out what was going on, and redirected him he want back to bed, artfully working his way around the usual Lego detritus everywhere his path. So weird you can be basically unconscious but still so functional!