People often post they have tongue twitching and blah blah..right, this is how real fasciculation of tongue looks like. Hope it helps newcomers and those who really have them. It is easily distinguishable from normal tongue tremor and movements, as you can see - there is no pulling or slow contractions, just rapid firing of one motor unit represented by a focal twitch of a muscle bundle of one of the tongue's muscles. Sporadically have been appearing for last 4 years, these are provoked.Also if you state you have tongue fasciculations, please check if it really looks something like that. It will also help me to know it is not that uncommon 
