Impaired spatial selectivity and intact phase precession in two-dimensional virtual reality
2015
M. Aghajan and colleagues recorded hippocampal activity in rats foraging in a two-dimensional virtual reality (VR) environment. Spatial selectivity was absent but phase precession was intact, occurring within 2-s-long hippocampal motifs. Selectivity to space and distance traveled were greatly enhanced when the rats repeatedly followed systematic paths. The results demonstrate that distal visual cues alone are insufficient to generate a robust hippocampal rate code for space but are sufficient to generate a temporal code.
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