… d, Behavioural recording protocol; sequential exposure to a familiar context, a novel context
and … Axons targeting the hippocampus are shown in d and soma in the SuM are shown in e. …

… d CA2 driven feedforward inhibition in CA3 is crucial for hippocampal E/I balance … (D)
Diagram of the extracellular recording configuration of the CA3-CA1 and CA3-CA3 measurements …

… A–D, We performed double FISH with a probe for NR1 (green) and CACNG5 (red). A,
The 5× epifluorescent image of a coronal section of the dorsal hippocampus of the flNR1/flNR1 …

The hippocampus is critical for memory formation. The hypothalamic supramammillary
nucleus (SuM) sends long-range projections to hippocampal area CA2. While the SuM-CA2 …

… (Figure 3D). This was again not observed during the habituation session (Figure S3D) and
… comparable firing rates across sessions (Figure 3D). These results suggest that ACC may …

… Data and code availability d All data reported in this paper are archived at the … d All code
used for analysis of this data is publicly available at https://zenodo.org/record/5250785. d Any …

… 1D) with the difference being most pronounced during acute stress on the first day (acute-rest, …
4C and D), we did observe event specific increases in co-activity, which was also carried …

… d Configuration of whole cell voltage clamp recording in acute hippocampal slices
prepared from CaMKIIα:Cre mice previously injected with mCherry or TeTX.mCherry virus was …

… compared to the control mice (Figure 1D, Table 1). Further, this decrease in excitability
resulted in significantly smaller place fields (Figure 1D). This effect was also evident when we …

… and drug d [two-way ANOVA, F (1,21) (genotype × drug)=18.35, p=0.0003] and a significant
decrease in c-fos expression in KA-injected CA3-TeTX mice compared with controls d (…