Fig. 6: Registration of 3D reconstructed input neurons traced from the PAG in a standardized mouse brain reference atlas.

a A detailed pathway of an input neuron in the periaqueductal gray (PAG) is shown in the 3D-reference atlas with its three views. b The input neuron located in the PAG was the furthest from the CeA among the three input neurons that we reconstructed. This neuron passed through the PAG, midbrain reticular nucleus (MRN), subparafascicular nucleus (SPF), medial lemniscus (ml), zona incerta (ZI), subthalamic nucleus (STN), Globus pallidus, internal segment (GPi), internal capsule (int), Globus pallidus, external segment (GPe), and caudoputamen (CP) in turn before finally reaching the CeA.