Hippocampal memory reactivation during sleep is correlated with specific cortical states of the retrosplenial and prefrontal cortices

Classification and coordination of hippocampal CA1 SWR activity with the retrosplenial and prefrontal cortical up and down states. (A) Fraction of SWRs occurring during a cortical up or down state of the RTC or PFC. (B) Fraction of SWRs occurring during different classifications of the up state. States transition from down to up or up to down or are sustained (sust.) up states. (C) Fraction of SWRs occurring during different classifications of the down state. States transition from up to down or down to up or are sustained down states. RTC n = 22, eight mice; PFC n = 18, five mice. (*) P < 0.01 robust ANOVA with post hoc bootstrap-t.