Quote Originally Posted by poopdeville View Post
Supposedly, that is exactly how genjutsu work. You "pump" chakra into their brain/nervous system and take control of it by swamping their chakra out. If the victim has enough chakra, he can mold a bunch and override the override. In fact, that is why Killer Bee was immune to Sasuke's Sharingan. He explained that a jinchuuriki who can control his bijuu is pretty much immune to genjutsu, because they can call on a huge amount of chakra to override the genjutsu's effects.
No, the way to counter genjutsu if you succumb to it is to have another person inject chakra into you. That's what Chiyo explained as a tactic to use against genjutsu users. The reason Killer Bee was immune is because his Bijuu is always present to wake him from genjutsu.