▁Sc ar borough ▁to ▁spend ▁a ▁year ▁at ▁the ▁Wel sh ▁National ▁School ▁of ▁Medicine ▁in ▁Card iff . ▁ ▁He ▁joined ▁the ▁research ▁staff ▁of ▁the ▁University ▁College , ▁I bad an ▁in ▁ 1 9 6 4 , ▁as ▁a ▁medical ▁research ▁fellow . ▁However , ▁upon ▁gain ing ▁a ▁Smith ▁and ▁Nep hew ▁fellow ship ▁he ▁went ▁abroad ▁for ▁further ▁studies ▁under ▁the ▁direction ▁of ▁Henry ▁Miller ▁and ▁John ▁Wal ton , ▁both ▁em inent ▁ne uro log ists ▁in ▁New castle ▁upon ▁Ty ne . ▁After , ▁sp ending ▁some ▁time ▁in ▁New castle , ▁he ▁took ▁a ▁job ▁at ▁the ▁National ▁Hospital ▁for ▁N erv ous ▁D ise ases , ▁Queens ▁Square , ▁London ▁before ▁returning ▁to ▁Niger ia ▁in ▁ 1 9 6 5 . ▁It ▁was ▁at ▁the ▁University ▁of ▁I bad an , ▁he ▁launched ▁a ▁product ive ▁career , ▁working ▁on ▁ne uro - ep ide mi ology ▁and ▁clin ical ▁and ▁investig ative ▁ne uro log y ▁especially ▁the ▁study ▁of ▁de ment ia ▁among ▁Niger ians ▁and ▁African ▁Americans . ▁ ▁In ▁the ▁late ▁ 1 9 6 0 s , ▁he ▁investig ated ▁cases ▁of ▁at ax ic ▁ne urop ath y ▁in ▁E pe ▁where ▁residents ▁usually ▁consume ▁a ▁do se ▁of ▁ill ▁processed ▁c ass ava ▁with ▁little ▁or ▁no ▁supp lement . ▁He ▁then ▁mapped ▁out ▁the ▁ep ide mi ology ▁of ▁the ▁ne urop ath y ▁and ▁was ▁able ▁to ▁study ▁the ▁basic ▁aspects ▁of ▁the ▁ne