Left, horizontal view of 212 reconstructed ALM neurons used to define ALM projection zones. Black dots, soma locations. Gray dashed lines, coronal slices shown on the right. Right, projection density on four coronal sections, approximately corresponding to the targets of insertion groups 1–4 (see text). AP, anterior-posterior location relative to bregma. Voxel intensity is the axonal projection length-density, normalized to the local axonal density in ALM.
