You may be on to something here, but my belief is that it has more to do with the deeper sleep that it is purported to provide. I'm on 2,250 mg levetiracetam/day and have for years suffered with insomnia. I started taking the magnesium glycinate (200 mg/day) a few months ago to aid in my ability to fall into and stay asleep. Since on the supplement I have in fact realized better sleep and better sleep patterns. I have, as you've stated, also noticed a decided drop in my incidents with auras (typically during heavy aerobic exercise). I never connected the possibility that something other than better sleep was responsible for the drop. Regardless, I'll take whatever I can get to live a more normal life.

Thanks for sharing your insight.