Before revision:  As it bridges information on the neural support of mental processes, this representation improves decoding performance for 80\% of the 35 widely-different functional imaging studiesthat we consider. Our approach opens new ways of extracting information from brain maps, increasing statistical power even for focused cognitive neuroimaging studies, in particular for those with few subjects .
After revision:  As it bridges information on the neural support of mental processes, this representation improves decoding performance for 80\% of the 35 widely-different functional-imaging studies. It finds commonalities across tasks in a data-driven way, via common brain representations that predict mental processes. These are brain networks tuned to psychological manipulations. They outline interpretable and plausible brain structures. The extracted networks have been made available; they can be readily reused in new neuro-imaging studies. We provide a multi-study decoding tool to adapt to new data .