Fig. 4: Organization of GABAergic neuronal types across the sAMY and BST.

a, Representative MERFISH sections showing the locations of subclasses belonging to the CNU–HYa GABA class. Cells are coloured and labelled by subclass (SC). A, anterior; P, posterior. b,c, Representative MERFISH sections showing the locations of cells belonging to the MEA–BST subclasses (b) and CEA–BST subclasses (c). Each row shows one subclass, and cells are coloured and labelled by supertype. Within each subclass, each supertype’s locations in both the MEA and BST (b) or both the CEA and BST (c) are shown, indicating the existence of the same cell type in these locations. d–f, Spatial domain clustering within BST neurons using BANKSY. The alluvial plot (d) shows the relationship between subclasses present in the BST and the spatial domains. Spatial domains corresponding to subclasses that are shared with MEA or CEA are labelled as MEA domains or CEA domains, respectively. Representative MERFISH images show the location of the spatial domains, with cells coloured by spatial domain identity (e) and the area covered by each domain (f). Triangular schematics denote the most granular hierarchical level shown in the panels. All class, subclass and region abbreviations are listed in Supplementary Table 1.