Tongue fasciculations are often described as 'ripple-like' movements of the tongue at rest or mild protrusion; however, I HATE this definition of it because it is extremely flawed. First of all, everyone's tongue has a ripple-effect to it while it is at rest (especially after eating or talking - i.e. It is HARD to rest your tongue and prohibit it from moving at all). Second, it is even more difficult to hold your tongue in a 'flexed' position. You will see all kinds of movements around your tongue. In my particular case, my tongue 'twitches' appear after I flex my tongue, then let it relax on my lip. I would not worry myself over this, because I am almost at 4 months as well, and just had my first EMG the other day on two legs and my whole arm. Don't concern yourself with this in the least little way, and most of all do not inspect your tongue. Remember, the closer you look, the more things on your own body will seem foreign to you.
