Obituary: Professor Richard Gregory, artificial intelligence pioneer, 86

Mr Gregory was a pioneer of human psychology, and made significant advances in the fast-changing world of artificial intelligence. Born in London in 1923, he was the son of astronomer Christopher Gregory. Mr Gregory spent five years in the RAF during the Second World War, after being called up at the age of 18. After exhibiting obvious academic talent the RAF offered Mr Gregory a scholarship to study philosophy and experimental psychology at Downing College, Cambridge and after proving himself a successful scientist and inventor he moved to Edinburgh, where he took up a post as professor of bionics. There he co-founded the Department of Machine Intelligence and Perception, the first of its kind in the UK.