Interactions With Hippocampal Place Cells
When a rat is moved to a different environment, the spatial activity patterns of hippocampal place cells usually show "complete remapping" — that is, the pattern of place fields reorganizes in a way that bears no detectable resemblance to the pattern in the original environment (Muller and Kubie, 1987). If the features of an environment are altered less radically, however, the place field pattern may show a lesser degree of change, referred to as "rate remapping", in which many cells alter their firing rates but the majority of cells retain place fields in the same locations as before. Fyhn et al. (2007) examined this phenomenon using simultaneous recordings of hippocampal and entorhinal cells, and found that in situations where the hippocampus shows rate remapping, grid cells show unaltered firing patterns, whereas when the hippocampus shows complete remapping, grid cell firing patterns show unpredictable shifts and rotations.
Read more about this topic: Grid Cell
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