John O'Keefe (born 1939) is a British-Canadian neuroscientist and Nobel laureate known for his pioneering work on the neuroscience of memory and spatial cognition. He was awarded the 2014 Nobel Prize in Physiology or Medicine, jointly with May-Britt Moser and Edvard I. Moser, for their discoveries of cells that constitute a positioning system in the brain. His discovery of place cells in the hippocampus revolutionized our understanding of how the brain forms and maintains spatial memories, with profound implications for understanding neurodegenerative diseases like Alzheimer's that affect memory systems.
John O'Keefe (born 1939) is a British-Canadian neuroscientist and Nobel laureate known for his pioneering work on the neuroscience of memory and spatial cognition. He was awarded the 2014 Nobel Prize in Physiology or Medicine, jointly with May-Britt Moser and Edvard I. Moser, for their discoveries of cells that constitute a positioning system in the brain.
John O'Keefe was born in London, United Kingdom, in 1939. He received his PhD from University College London (UCL) in 1967. He has spent most of his career at UCL, where he established the Neural Circuits and Behaviour research group.
O'Keefe's research has focused on understanding the neural basis of cognition and memory. His most significant discoveries include:
O'Keefe discovered "place cells" in the hippocampus — neurons that fire only when an animal is in a specific location in its environment. This discovery provided the first evidence that the brain creates an internal map of the environment.
His work has direct implications for understanding Alzheimer's disease:
In collaboration with the Mosers, O'Keefe's work helped uncover grid cells — neurons that create a hexagonal grid representation of space in the entorhinal cortex.