Klaus J, et al. - In order to clarify the role of specific subregions of left inferior frontal gyrus (IFG), at different representational levels, in language production, researchers asked participants to perform a category member and a rhyme generation task, during which, repetitive transcranial magnetic stimulation (rTMS) was applied over anterior and posterior IFG (aIFG/pIFG), and vertex as a control site. For the first time, in this study, causal evidence was obtained for the notion that for semantic processing, anterior portions of the IFG are selectively recruited, while for phonological processing during word production, posterior regions are functionally specific. In language production, the functional parcellation of the left IFG was highlighted.