Board Thread:Theories and Speculation/@comment-31099706-20170327120301/@comment-31338621-20170413074015

BakumatsuWarrior wrote: @BrainBrand: Hmm, could you please provide the reference where the cranial nerve thing was mentioned? I thought all genjutsu worked by disrupting the chakra circulation, which was shown when Rin was put under a genjutsu by the Hidden Stone guys in Kakashi Gaiden.

Either way, I don't see why causing Sasuke enormous trauma, which would consequently weaken his ability to control and manipulate his chakra, wouldn't strengthen Orochimaru. In fact, it seems like the ideal way to weaken Sasuke without causing debilitating physical damage.

The chapter where Jiraiya mentions how genjutsu works he said it works by controlling the cranial nerves. Torture wouldn't force Sasuke to try to draw out more chakra then he had, which was the reason Oro could come out. If all it was needed was for Oro to come out is for Sasuke chakra control to weaken, then why didn't Oro come out when Sasuke slept?