Acta Medica Okayama 1995 Effects of anodal polarization on protein kinase C activity and neuronal morphology in the rat brain  1. Anodal polarization induces protein kinase Cγ (PKCγ)-like immunoreactivity in the rat cerebral cortex  2. Appearance of dark neurons following anodal polarization in the rat brain EN No potential conflict of interest relevant to this article was reported.