Hi Lauren1214,

Yes, i've experienced that uncontrollable sleepiness when i don't want to do something or be somewhere or under stress. It's a strange thing, like you describe and comes on suddenly. i could be filled with energy one minute then something happens and i can barely keep from falling asleep.
It happened lots of times, sometimes it happens at therapy, once it happened when i felt threatened by my h when he was angry with me at a grocery store. If WW3 started it wouldn't have upset me at all.
It's weird how much our body can be affected by our minds. That's interesting that the brain waves change.
Take care,
kerria