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Keyword: egocentric coordinates ×Clear all

2 claims from 1 paper

1. Neuroscience › Memory and Neural Mechanisms

   Transformation of spatial representations along hippocampal circuits

   Gandit, Posani, Zhang et al. · iScience · 2024

   Calcium imaging in the dentate gyrus and CA3 of mice in a narrow corridor suggests both areas use egocentric and allocentric spatial coding, with egocentric distance coding more prevalent in the dentate gyrus.

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   1. UncheckedIn mice running along a corridor, dentate gyrus activity maps, but not CA3 maps, line up across running directions, suggesting egocentric distance coding.“We find that spatial activity maps in the dentate gyrus, but not in CA3, are correlated after aligning them to the running directions, suggesting that they represent the distance traveled along the track in egocentric coordinates.”
   2. UncheckedIn mice, the dentate gyrus and CA3 both encode space in egocentric and allocentric terms, but egocentric distance coding is more common in the dentate gyrus.“Together with population activity decoding, our data suggest that while spatial representations in the dentate gyrus and CA3 are anchored in both egocentric and allocentric coordinates, egocentric distance coding is more prevalent in the dentate gyrus than in CA3, providing insights into the assemb…”