Computer-generated 3-D reconstruction from case R118, after injection of BDA into the trunk representation of SI. The labeling in the right pontine nuclei consists of four clusters surrounding a centrally located non-labeled zone (which contains projections from perioral representations, cf. R103, R105, R106, R113). Two large, densely labeled clusters are shifted laterally to the center of the pontine nuclei, one is located rostrally, the other caudally. Smaller clusters of labeling are seen close to the midline. The sparse contralateral labeling is not shown. Bar = 500 µm.