Example of galaxies with the circumnuclear region classified as INT type. Panel a: locations of the spaxels with the H II-region-like and intermediate spectra on the image of the MaNGA galaxy M-8137-12703. The BPT types of the spaxels spectra are color-coded. The spaxels with the intermediate spectra in the circumnuclear region (center) and in the disc are shown by different colors. The circles marks the kinematic center of the galaxy. Panels b–e: variations with radius of the surface brightness in the Hα line (panel b), the observed (non corrected for the instrumental profile) gas velocity dispersion (panel c), the X_BPT = log([N II]λ6584/Hα) (panel d), and the Y_BPT = log([O III]λ5007/Hβ) (panel e). In each panel, 1 pixel corresponds to 0.385 kpc.