Three scientists namely Prof John O'Keefe, May-Britt Moser and Edvard Moser has been awarded the Nobel Prize for physiology or medicine for discovering the brain's GPS system .

The findings may help explain why Alzheimer's disease patients could not recognize their surroundings.
The Nobel Assembly said that the discoveries had solved a problem that had occupied philosophers and scientists for centuries.
The Nobel committee said the combination of grid and place cells constituted a comprehensive positioning system, an inner GPS, in the brain.
Source-ANI