Good question, I hadn't thought of that. I do have fasciculations in the eyelids...one or the other, but not both at the same time. I infrequently get them in my thigh or calf also, but usually can see it twitch and typically only a small area is affected.

This vibration feeling is very deep inside so I guess it could be fasciculations, just not visible. Although I've had them on/off for several years (with no idea what they are), they are lasting days now instead of hours. I can wake up at night and they are still going strong. This latest round is pushing a full week now with only short breaks

I'll have to do some more research. I have always had normal EMG's...but then again I wonder if it would have to catch it in the act in order for something to show. Is this how they confirm fasciculations...EMG?