near the very bottom of column left hand side...

http://www.aans.org/education/journa...21-6-intro.pdf
also this site which mentions neuro stimulation for O.N.

http://www.fpa-support.org/aboutfp/N...imulation.html

I didn’t realize they had any info about neuro stim for treatment of O.N.
I have neuro stimulator for my t.n. anesthesia dolorosa ... the implant is not much trouble at all. Same day surgery. it is not near or on..connected to my brain or anything like that. . . it is just under my skin. I bet if you contacted someone from the link they could help with anyone who has had stimulation for o.n.
And of course I will help if I can .
PEACE BMW