CLEVELAND, OH - JULY 20: A helicopter carrying republican presidential nominee Donald Trump flies over Lake Erie on July 20, 2016 in Cleveland, Ohio. Republican presidential nominee Donald Trump gathered with running mate Mike Pence and their families at the Great Lakes Science Center on day three of the Republican National Convention. (Photo by Justin Sullivan/Getty Images)

TO GO WITH AFP STORY BY MARIETTE LE ROUX This handout image released by Nature on July 20, 2016 shows a map of myelin content (red, yellow are high myelin, indigo and blue are low myelin) in the left hemisphere of cerebral cortex. For years, doctors have had reliable charts of the body and its organs -- blood circulation, digestive system, nerves and the like -- but always with one frustrating grey zone: the brain. On July 20, 2016, a team of neuroscientists, computer specialists and engineers said they had compiled what "could be the most accurate map yet" of the mysterious expanse between our ears. / AFP PHOTO / NATURE PUBLISHING GROUP / Matthew F. Glasser AND , David C. Van Essen / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / NATURE / Matthew F. Glasser, David C. Van Essen" - NO MARKETING NO ADVERTISING CAMPAIGNS - TO ILLUSTRATE THE STORY AS SPECIFIED IN THE CAPTION - DISTRIBUTED AS A SERVICE TO CLIENTS / TO GO WITH AFP STORY BY MARIETTE LE ROUXMATTHEW F. GLASSER,, DAVID C. VAN ESSEN/AFP/Getty Images

TO GO WITH AFP STORY BY MARIETTE LE ROUX This handout image released by Nature on July 20, 2016 shows the pattern of brain activation (red, yellow) and deactivation (blue, green) in the left hemisphere when listening to stories while in the MRI scanner. For years, doctors have had reliable charts of the body and its organs -- blood circulation, digestive system, nerves and the like -- but always with one frustrating grey zone: the brain. On July 20, 2016, a team of neuroscientists, computer specialists and engineers said they had compiled what "could be the most accurate map yet" of the mysterious expanse between our ears. / AFP PHOTO / NATURE PUBLISHING GROUP / Matthew F. Glasser AND , David C. Van Essen / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / NATURE / Matthew F. Glasser, David C. Van Essen" - NO MARKETING NO ADVERTISING CAMPAIGNS - TO ILLUSTRATE THE STORY AS SPECIFIED IN THE CAPTION - DISTRIBUTED AS A SERVICE TO CLIENTS / TO GO WITH AFP STORY BY MARIETTE LE ROUXMATTHEW F. GLASSER,, DAVID C. VAN ESSEN/AFP/Getty Images

TO GO WITH AFP STORY BY MARIETTE LE ROUX This handout image released by Nature on July 20, 2016 shows a 180-area multimodal human cortical parcellation on the left and right hemisphere surfaces. For years, doctors have had reliable charts of the body and its organs -- blood circulation, digestive system, nerves and the like -- but always with one frustrating grey zone: the brain. On July 20, 2016, a team of neuroscientists, computer specialists and engineers said they had compiled what "could be the most accurate map yet" of the mysterious expanse between our ears. / AFP PHOTO / NATURE PUBLISHING GROUP / Matthew F. Glasser AND , David C. Van Essen / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / NATURE / Matthew F. Glasser, David C. Van Essen" - NO MARKETING NO ADVERTISING CAMPAIGNS - TO ILLUSTRATE THE STORY AS SPECIFIED IN THE CAPTION - DISTRIBUTED AS A SERVICE TO CLIENTS / TO GO WITH AFP STORY BY MARIETTE LE ROUXMATTHEW F. GLASSER,, DAVID C. VAN ESSEN/AFP/Getty Images

(FILES) This file photo taken on July 30, 2014 shows a Microsoft logo during the presentation of the Xbox One in Shanghai. US stocks opened higher July 20, 2016 following a series of mostly solid earnings, including from Microsoft, which lifted the Dow further from an all-time high. Dow-member Microsoft vaulted 5.3 percent after reporting a better-than-expected $3.1 billion in fiscal fourth-quarter earnings that showed strong growth in its cloud computing businesses. / AFP PHOTO / JOHANNES EISELEJOHANNES EISELE/AFP/Getty Images

King Philippe - Filip of Belgium visits the exhibition on science and culture 'Science et culture au Palais', at the Royal Palace in Brussels, on July 20, 2016 on the opening day of the exhibition. / AFP PHOTO / Belga / THIERRY ROGE / Belgium OUTTHIERRY ROGE/AFP/Getty Images

Queen Mathilde of Belgium (L) visits the exhibition on science and culture 'Science et culture au Palais', at the Royal Palace in Brussels, on July 20, 2016 on the opening day of the exhibition. / AFP PHOTO / Belga / THIERRY ROGE / Belgium OUTTHIERRY ROGE/AFP/Getty Images

Queen Mathilde of Belgium visits the exhibition on science and culture 'Science et culture au Palais', at the Royal Palace in Brussels, on July 20, 2016 the opening of the exhibition. / AFP PHOTO / Belga / THIERRY ROGE / Belgium OUTTHIERRY ROGE/AFP/Getty Images