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Spatial Representation in the Entorhinal Cortex

2004; American Association for the Advancement of Science; Volume: 305; Issue: 5688 Linguagem: Inglês

10.1126/science.1099901

1095-9203

Marianne Fyhn, Sturla Molden, Menno P. Witter, Edvard I Moser, May‐Britt Moser,

Stress Responses and Cortisol

As the interface between hippocampus and neocortex, the entorhinal cortex is likely to play a pivotal role in memory. To determine how information is represented in this area, we measured spatial modulation of neural activity in layers of medial entorhinal cortex projecting to the hippocampus. Close to the postrhinal-entorhinal border, entorhinal neurons had stable and discrete multipeaked place fields, predicting the rat's location as accurately as place cells in the hippocampus. Precise positional modulation was not observed more ventromedially in the entorhinal cortex or upstream in the postrhinal cortex, suggesting that sensory input is transformed into durable allocentric spatial representations internally in the dorsocaudal medial entorhinal cortex.