A screen displays the winners of the 2014 Nobel Medicine Prize on October 6, 2014 at the Karolinska Institutet in Stockholm, Sweden (L-R) British-American researcher John O'Keefe, Norwegian scientist May-Britt Moser and Norwegian scientist Edvard I Moser. British-American researcher John O'Keefe jointly won the Nobel Medicine Prize with Norwegian husband and wife team, Edvard I Moser and May-Britt Moser, for discovering an inner GPS system in the brain.      AFP PHOTO / JONATHAN NACKSTRAND        (Photo credit should read JONATHAN NACKSTRAND/AFP/Getty Images)