rtfm.
there are a fewposts on similar topics:
[Spinning/rocking: hypnagogic movement?)
[Electical charges)
ah i have become suddenly lazy…
there is one called hypnagogic sounds?!!?! you can search for, and then one pertaining to ahm “jerks” of some kind.
oh wait, it is this one;
["falling feeling" [myoclonic jerks]) heh those silly jerks…
dammit. here is that other stupid sound one,
[Hypnagogic sounds?)
sorry i spoiled all the fun of making you actually look/search for information, or that post rather, on the boards.