Board Thread:Theories and Speculation/@comment-31099706-20170327120301/@comment-26773508-20170413055036

@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.