I’m a bit confused what you’re asking? For example motor neurons cause muscle contraction… however, glycine neurons will calm down and relax these motor neurons to make sure you aren’t contracting your muscle all day constantly… in clostridium tetanus bacteria infection, these inhibitory glycine neurons are damaged, so now you can’t inhibit the motor neurons causing muscle contraction.. and now your motor neurons cause constant uncontrollable muscle contraction and muscles will be so tense you can’t move… imagine all the muscles in your body contracted continuously constantly… however inhibitory glycine neurons allow relaxation and proper organized movement