Central sufrace brightness of Hα and oxygen [O III]λ5007 emission lines in galaxies with the circumnuclear regions of the SF and SF+INT BPT types. Panel a: Central surface brightness Σ_{Hα, centre} as a function of galaxy’s stellar mass. The grey circles denote all the galaxies, the red plus signs mark the cSB galaxies with the circumnuclear regions of the SF BPT type, and blue crosses show the cSB galaxies with the circumnuclear regions of the SF+INT BPT type. The green square is the MaNGA galaxy M-8454-12702. Panel b: Same as panel (a) but for the oxygen [O III]λ5007 emission line. Panel c: Central surface brightness Σ_{Hα, centre} as a function of the median surface brightness Σ_{Hα, median}. The designations are the same as in panel (a). Panel d: Same as panel (c) but for the oxygen [O III]λ5007 emission line.