**Standard diagrams for data
presentation**

Standard diagrams for data presentation derived from the local pontine nuclei coordinate system. A, total projections of pontine nuclei and reference frame from standard views. B, series of ten transverse slices through the 3-D reconstruction. Each slice corresponds to 10% of the total rostrocaudal extent of the pontine nuclei. C, series of ten sagittal slices through the 3-D reconstruction. Each slice corresponds to 10% of the total mediolateral extent of the pontine nuclei. Straight lines represent the boundaries of the coordinate system (solid) and reference lines (dotted). Contour lines represent the outer boundaries of pontine nuclei, the descending fiber tract (peduncles) and the ventral surface of the brainstem, respectively, as maximum projections in the three standard angles of view (A) or within individual slices (B and C). Bar, 500 µm