Materials and methods
This study was pre-registered on ClinicalTrials.gov (NCT03574974). The study protocol was reviewed and approved by Yale IRB (approval number #2000022668).The brain imaging sessions were carried out on a 3-Tesla MRI system (imaging details in Supplementary Information (SI)). Online fMRI data preprocessing and neurofeedback were performed using the real-time module in BioImage Suite 3.0. We used MATLAB (The MathWorks Inc.; Natick, Massachusetts) for stimuli (including feedback signal) presentation. Statistical tests on the extracted imaging and clinical measurements were performed with JASP (