Figure 2.

Odor mixture associative learning merges neuronal ensembles of odor components. a, Schematic of odor mixture associative training and brain extraction protocol. b1, Go–no-go behavioral paradigm (left) and percentage correct responses in the associative (Asso) group and the random group (right). b2, Representative images of Arc⁺ cells in the aPC (left) and overlap ratios (OLRs) of the cell ensembles representing peppermint (PP) and vanillin (VA; right). Arrows indicate double-stained Arc⁺ cells. Scale bar, 20 μm. *p < 0.05, **p < 0.01.