Polyfragmentation means "many" or "much" (poly) fragments. In other words there are many many alters. Some alters may be much more developed than others because they are "out" a lot more often and experience more of life. Like perhaps some alters deal with a chunk of daily life (so are well developed) while others dealt with only one aspect of one particular trauma (perhaps 15 minutes of "air time" so to speak). Obviously the one who is out most will be much more developed as an independent self state than the part whose total experience is 15 minutes of trauma. Some Ts call alters like the 15 minute parts "fragments". The average number of alters is around 16. Some people have many many more alters than that, and that is called polyfragmented DID. I have never experienced that "lightning" feeling you describe and I don't remember any time an alter was created or what it felt like either. But maybe that is a good thing??