David Foster, Ph.D., is an assistant professor of neuroscience at the Johns Hopkins University School of Medicine. He works with rats to study specific nerve cells in the hippocampus region of the brain. The cells are called “place cells” because they help create a “map” in the brain that helps rats navigate through their surroundings, like a GPS. John O’Keefe (of University College London), May-Britt Moser and Edvard Moser (of the Norwegian University of Science and Technology) discovered this GPS system, for which they were awarded the Nobel Prize today.

Foster is available for interviews today.

Watch a talk that Foster gave to science journalists about his work.