I found a key point of Nebulus Balls

A main key point of the Nebulus balls is to hypnotize, yeah, but it is mainly mind control. So if you are good at resisting mind control hypnosis and tactics, you will be surprised at how little you hear them. You might log yourself out completely because I have finally found out one of the main tricks to keep you logged in. I think this is true for most synthetic telepathy but don't quote me on that.