A therapeutic apparatus to treat depression has been developed in northeast China's Heilongjiang Province, government sources said Saturday.The apparatus, which claims to be the world's first instrument to treat clinical depression, combines transcranial magnetic stimulation and music therapy. An evaluation report by the provincial committee of industry and information technology called it a worldwide breakthrough.The report, released on Thursday, confirmed that the apparatus is applicable to patients suffering from mild and moderate clinical depression.Transcranial magnetic stimulation is a non-invasive method that causes depolarization in the brains' neurons so as to restore the functions of brain nerves.The apparatus consists of three parts, a transcranial magnetic stimulator, an audio...