Images of the brightest emission line for the 37 radiogalaxies observed with MUSE. The white dotted lines mark the radio position angle, and the solid white lines show the orientation of the emission line structures, when possible, on both sides of the nucleus. The gray line is the orientation of the kinematical major axis in the inner regions measured with kinemetry for all sources with data quality sufficient for a robust measurement (see text for details). The rectangle represents the regions from which we extracted the velocity curve shown in the right panel. The length of the gray bars represents the line width at each location.