These observations agree with the finding of place fields across the dorsoventral axis of the hippocampus with those in the ventral hippocampus being modulated by anxiety during spatial navigation (Malagon-Vina et al., 2023) and with the finding that cFos developmental transcription in rat hippocampus is significantly correlated with developmental age and not with the hippocampal portion (Signature 2 in Figure 1B and Supplementary material 1 in Olsen et al., 2023). The gene discussed is FOS; the disease is Anxiety.