Task, behavioral results, and hypothesis (IMAGE)

Chinese Academy of Sciences Headquarters

Task, behavioral results, and hypothesis

Caption

(A) Object-location memory task; (B) Schematic depiction of firing fields for one grid cell (purple circle). More fields are crossed during six moving directions which are aligned with the grid (purple), translating to stronger brain activity. (C) Depiction of all electrode contacts in mPFC and EC (black circles) relative to two control regions (dmPFC and OFC). (D) Theta power was higher during movements aligned with the grid axes as compared to misaligned movements. Purple, aligned; gray, misaligned. (E) Hexa-directional modulation is unique to theta oscillation and mPFC. (F) mPFC and EC show similar grid orientations. (G) Theta coherence is significantly stronger in better spatial memory performance trials. (H) Granger causality analyses show significant influence from mPFC to EC (top) but not in the reverse direction (bottom) during memory retrieval. The gray lines denote 95% confidence intervals of the null distribution.

Credit

Dong Chen

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