ener ation , ▁the ▁central ▁nerv ous ▁system ▁is , ▁for ▁the ▁most ▁part , ▁in cap able ▁of ▁self - rep air ▁and ▁reg ener ation . ▁There ▁is ▁currently ▁no ▁treatment ▁for ▁recover ing ▁human ▁n erve ▁function ▁after ▁injury ▁to ▁the ▁central ▁nerv ous ▁system . ▁In ▁addition , ▁multiple ▁attempts ▁at ▁n erve ▁re - g row th ▁across ▁the ▁P NS - C NS ▁transition ▁have ▁not ▁been ▁successful . ▁There ▁is ▁simply ▁not ▁enough ▁knowledge ▁about ▁reg ener ation ▁in ▁the ▁central ▁nerv ous ▁system . ▁In ▁addition , ▁although ▁the ▁peri pher al ▁nerv ous ▁system ▁has ▁the ▁cap ability ▁for ▁reg ener ation , ▁much ▁research ▁still ▁needs ▁to ▁be ▁done ▁to ▁optimize ▁the ▁environment ▁for ▁maximum ▁reg row th ▁potential . ▁Ne ur or eg ener ation ▁is ▁important ▁clin ically , ▁as ▁it ▁is ▁part ▁of ▁the ▁path ogen esis ▁of ▁many ▁dise ases , ▁including ▁multiple ▁s cl eros is . ▁ ▁Per i pher al ▁nerv ous ▁system ▁reg ener ation ▁▁ ▁Ne ur or eg ener ation ▁in ▁the ▁peri pher al ▁nerv ous ▁system ▁( P NS ) ▁occurs ▁to ▁a ▁significant ▁degree . ▁After ▁an ▁injury ▁to ▁the ▁ax on , ▁peri pher al ▁neur ons ▁activ ate ▁a ▁variety ▁of ▁signal ing ▁path ways ▁which ▁turn ▁on ▁pro - g row th ▁gen es , ▁leading ▁to ▁re formation ▁of ▁a ▁functional ▁growth ▁cone ▁and ▁reg ener ation . ▁The ▁growth ▁of ▁these ▁ax ons ▁is ▁also