Extended Data Fig. 8: Long-range projections to the superficial layers in S1.
From: Active dendritic currents gate descending cortical outputs in perception

Retrograde labeling of presynaptic neurons (cyan) in different brain regions that project to the superficial layers of S1. Top left, immersion site of Fast Blue (cyan) on S1, overlaid with nuclear staining (red). Similar results were obtained in three independent experiments (n = 3 mice).