It's unshed skin over the ear drum that causes an imbalance.It will usually happen in the first six weeks of life and can be overcome by misting and soaking.It has nothing to do with calcium imbalances,brain damage ,overheating,or anything else but dry skin.On another note they cannot get a middle ear infection due to the structure of the ear.As for studies being done , i do them all day everyday and deal with this problem of " drunk baby beardeds " on a daily basis.They all "straighten out " within a few days and go on to be sober in habits for the rest of there lives cheers Troy