 The neuroanatomical research involved was a study of the synaptic structure in human cortex as revealed by silver staining and was awarded a post-graduate M.D degree by Cambridge (23).His teacher in philosophy was the distinguished American philosopher Avrum Stroll, who became a lifelong mentor and friend.This was followed during the tenure of a Nuffield Fellowship by six months with the Nobel Laureate Sir John Eccles in neurophysiology and 18 months at the Psychological Laboratory in Cambridge with Oliver Zangwill studying the stroboscopic patterns (the complex geometrical hallucinations induced by looking at a flickering light).