Extended Data Fig. 8: Localization of branching points and projection pattern analysis of a single neuron in STAM.

a, Magnified view of the neuron shown in Fig. 5e, with the soma marked by a white star. b, Zoom-in of the dashed box in (a), highlighting branching points in fi and SF (yellow and red dots, respectively). Black arrows indicate neuron projection directions; black text labels mark projection targets. Same applies hereafter. c, View along the observing direction indicated by the arrow in (a), showing red branching points in alv. d, Diagram of the neuron’s projection pattern. The leftmost circle represents the soma’s location; other circles indicate target or intermediate structures with branching points. Lines represent projection paths and their directionality. e, Snapshot of the STAM neuronal circuit viewer, highlighting terminals and branching points located in CA3sod in red, and the remaining colored in green.