PT - JOURNAL ARTICLE AU - Gunn, B.G. AU - Cox, B.M. AU - Cox, C.D. AU - Le, A.A. AU - Inshishian, V.C. AU - Gall, C.M. AU - Lynch, G. TI - Acquisition of Temporal Order Involves a Reverberating Network in Hippocampal Field CA3 AID - 10.1101/623025 DP - 2019 Jan 01 TA - bioRxiv PG - 623025 4099 - http://biorxiv.org/content/early/2019/04/30/623025.short 4100 - http://biorxiv.org/content/early/2019/04/30/623025.full AB - Here we report that hippocampal field CA3 maintains self-sustained activity for remarkable periods following a brief input and that this effect is extremely sensitive to minor perturbations. Using novel behavioral tests, that as with human episodic learning do not involve training or explicit rewards, we show that partial silencing of the network in mice blocks acquisition of temporal order, but not the identity or location, of odors. These results suggest a solution to the question of how hippocampus adds time to episodic memories.