Three scientists have won this year's Nobel Prize in Physiology or Medicine on Monday for finding "an inner GPS in the brain" that allows all living beings to navigate their surroundings.

The prestigious award was given to anBritish-American scientist and a pair of Norwegian researchers for discovering the brain's ability to navigate. John O'Keefe, 75, a British-American scientist, May-Britt Moser, 51, and Edvard I. Moser, 52 won the prize of $1.1 million. The Norwegian researchers are only the second married couple to win a Nobel in medicine and will receive half of the prize money.

Karolinska Institute in Sweden, which chooses the laureates said that the discoveries "have solved a problem that has occupied philosophers and scientists for centuries - how does the brain create a map of the space surrounding us and how can we navigate our way through a complex environment?"

They said that the positioning system discovered by the scientists help up know where we are and find our way from place to place and also store the information for the next time, according to Goran K. Hansson, secretary of the Karolinska's Nobel Committee.