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Nobel Prize in Physiology or Medicine 2014
Year of election: | 2016 |
Section: | Organismic and Evolutionary Biology |
City: | Trondheim |
Country: | Norway |
Research Priorities: Neuroscience, mechanism of spatial orientation, natural navigation system, grid cells, speed cells
Edvard Moser is a neuroscientist. He is known for his work on spatial orientation and spatial memory. Together with May-Britt Moser he discovered a type of brain cell (grid cells) that enables precise orientation in space. This made it possible to demonstrate thinking capacity at a neuronal level for the first time. For the discovery of grid cells Edvard Moser and May-Britt Moser received the Nobel Prize in Physiology or Medicine in 2014, together with John O’Keefe.
Edvard Moser researches how mammals orientate themselves in spaces. He studies the neural network computations within the brain’s cortex, for which thousands of distinct neurons work together. Together with May-Britt Moser he discovered previously unknown nerve cells in the brains of rats that work like a natural navigation system. The ”grid cells” place a virtual coordinate grid of hexagons over the perceived environment. By means of this grid the brain can calculate its position in space. This is the first time that the two researchers have been able to demonstrate thinking capacity at a neuronal level. In further studies they also identified “border cells”. These become active when animals approach obstacles and walls.
Edvard and May-Britt Moser have thus explained essential principles of the orientation system in rodents. The grid and border cells they discovered are involved in interaction with other cells. These include head-direction cells and place cells, which send signals when an animal passes known locations and landmarks. Together, the cell types are assumed to create a kind of map of the spatial environment. In more recent studies, they have also discovered cells that indicate walking speed, known as speed cells. For this they investigated the brain activity of rats at different walking speeds. As speed increases the speed cells become more active.
Edvard Moser and May-Britt Moser received the Nobel Prize in Physiology or Medicine in 2014 for the discovery of grid cells. They share the award with the British-US neuroscientist John O‘Keefe, who identified the brain’s place cells. The results of research by Edvard Moser and May-Britt Moser could advance research into Alzheimer’s disease. The areas of the brain relating to orientation are the first to be affected by Alzheimer’s disease. Patients lose their ability to orient themselves first. When we understand on which neuronal basis spatial orientation takes place, new approaches to therapy can be developed on this basis.
Previous research has been focused on the conversion of visual and auditory stimuli into active patterns in the brain. These findings are limited to the first stages of sensory perception. How information is transferred at a higher level is subject to other processes and is still to be thoroughly unstood. Deciphering the coding of this information transfer is the focus of Edvard Moser’s current research.