More than three decades of research have demonstrated a role for hippocampal place cells
in representation of the spatial environment in the brain. New studies have shown that place�…

The unitary firing fields of hippocampal place cells are commonly assumed to be generated
by input from entorhinal grid cell modules with differing spatial scales. Here, we review�…

At least two important questions are posed by the existence of hippocampal place cells. The
first of these has to do with how the complex, abstract properties exhibited by these cells can�…

Since the first place cell was recorded and the cognitive-map theory was subsequently
formulated, investigation of spatial representation in the hippocampal formation has evolved�…

How entorhinal grids generate hippocampal place fields remains unknown. The simplest
hypothesis—that grids of different scales are added together—cannot explain a number of�…

Place and grid cells in the hippocampal formation provide foundational representations of
environmental location, and potentially of locations within conceptual spaces. Some�…

Spatial learning and memory are important for navigation and formation of episodic
memories. The hippocampus and medial entorhinal cortex (MEC) are key brain areas for�…

Two neural systems are known to encode self-location in the brain: Place cells in the
hippocampus encode unique locations in unique environments, whereas grid cells, border�…

The hippocampal system is critical for storage and retrieval of declarative memories,
including memories for locations and events that take place at those locations. Spatial�…

Spatially firing" place cells" within the hippocampal CA1 region form internal maps of the
environment necessary for navigation and memory. In rodents, these neurons have been�…