▁S acks ▁had ▁described ▁it ▁as ▁a ▁" fore ign ▁incon ce iv able ▁thing ." ▁ ▁S acks , ▁having ▁experienced ▁something ▁similar ▁to ▁this ▁with ▁a ▁patient ▁of ▁his ▁from ▁the ▁past , ▁determined ▁that ▁he ▁must ▁have ▁acquired ▁some ▁form ▁of ▁" anos ogn os ia " ▁as ▁a ▁result ▁of ▁his ▁accident . ▁ ▁Unfortunately , ▁the ▁phys icians ▁tre ating ▁S acks ▁did ▁not ▁acknow ledge ▁his ▁ill ness ▁on ▁the ▁basis ▁that ▁the ▁operation ▁was ▁a ▁success ▁and ▁anything ▁that ▁the ▁patient ▁was ▁experien cing ▁was ▁simply ▁a ▁result ▁of ▁his ▁own ▁h yst eria . ▁ ▁Two ▁weeks ▁following ▁the ▁operation , ▁S acks ▁begins ▁to ▁experience ▁invol unt ary ▁elect rical ▁p uls es ▁down ▁his ▁leg ▁- ▁something ▁he ▁attributed ▁to ▁ne uro log ical ▁recovery . ▁ ▁However , ▁this ▁improvement ▁did ▁nothing ▁to ▁improve ▁S acks ' ▁mental ▁state . ▁ ▁Although , ▁when ▁a ▁friend ▁of ▁S acks ▁brought ▁him ▁his ▁rec order ▁and ▁a ▁c ass ette ▁of ▁M end els so hn ' s ▁Vi olin ▁Con cer to , ▁the ▁music ▁brought ▁back ▁S acks ' ▁hope ▁along ▁with ▁his ▁love ▁and ▁appreci ation ▁for ▁life . ▁ ▁The ▁next ▁day , ▁S acks ▁had ▁his ▁cast ▁removed , ▁but ▁he ▁could ▁not ▁sh ake ▁the ▁est r ang ement ▁he ▁felt ▁towards ▁the ▁now ▁n aked ▁lim b . ▁ ▁During ▁a ▁seem ingly ▁fut ile ▁session ▁with ▁the ▁phys i other ap ist , ▁S acks