, ▁mig raine , ▁and ▁other ▁brain - f iring ▁dis orders , ▁but ▁has ▁been ▁found ▁to ▁have ▁varying ▁clin ical ▁success ▁for ▁each ▁condition . ▁The ▁end ▁result ▁of ▁such ▁research ▁would ▁be ▁to ▁develop ▁a ▁method ▁to ▁alter ▁the ▁brain ' s ▁per ception ▁and ▁firing ▁and ▁train ▁patients ' ▁bra ins ▁to ▁re wire ▁perman ently ▁under ▁in hib iting ▁conditions ▁( for ▁more ▁information ▁see ▁r T MS ). ▁In ▁addition , ▁P ET ▁sc ans ▁have ▁been ▁found ▁to ▁be ▁ 9 3 % ▁accurate ▁in ▁detect ing ▁Al z heimer ' s ▁disease ▁nearly ▁ 3 ▁years ▁before ▁conventional ▁diagn osis , ▁indicating ▁that ▁P ET ▁sc anning ▁is ▁becoming ▁more ▁useful ▁in ▁both ▁the ▁labor atory ▁and ▁the ▁clin ic . ▁ ▁St em ▁cell ▁techn ologies ▁are ▁always ▁sal ient ▁both ▁in ▁the ▁minds ▁of ▁the ▁general ▁public ▁and ▁scient ists ▁because ▁of ▁their ▁large ▁potential . ▁Rec ent ▁adv ances ▁in ▁stem ▁cell ▁research ▁have ▁allowed ▁research ers ▁to ▁eth ically ▁purs ue ▁studies ▁in ▁nearly ▁every ▁fac et ▁of ▁the ▁body , ▁which ▁includes ▁the ▁brain . ▁Research ▁has ▁shown ▁that ▁while ▁most ▁of ▁the ▁brain ▁does ▁not ▁reg ener ate ▁and ▁is ▁typically ▁a ▁very ▁difficult ▁environment ▁to ▁fost er ▁reg ener ation , ▁there ▁are ▁port ions ▁of ▁the ▁brain ▁with ▁reg ener ative ▁capabilities ▁( specific ally ▁the ▁hi pp oc amp us ▁and ▁the ▁ol factory ▁bul bs ). ▁Much ▁of ▁the ▁research ▁in ▁central ▁nerv ous ▁system