The purpose of this study is to assess the effectiveness of rTMS on the negative symptoms of schizophrenia in real conditions. It will also provide a regulatory framework to rTMS treatments under these conditions. 4 types of rTMS protocols are proposed, allowing to adapt to patients and their tolerances.Treatment lasts between 2 and 4 weeks, with a follow-up period of 3 months after treatment to observe relapses.To assess the evolution of negative symptoms between baseline and the end of treatment, investigators use SANS (Scale for the Assessment of Negative Symptoms).