Targeting Large-scale Networks in Depression With Real-time Functional Magnetic Resonance Imaging (fMRI) Neurofeedback

Part 3/Phase 3 study hypothesis are: * Rest Focus Task (RFT) will activate brain networks at the individual subject level to provide a viable signal for Neurofeedback (NF) * At the group level, RFT in the Active\>Passive contrast will activate canonically defined salience network * Neurofeedback-reinforced practice over the session will increase RFT activation over the course of the training session, comparing RFT activation, without NF, before and after NF runs. * Valid Neurofeedback will increase RFT activation more compared to sham NF (assessed during the no-NF session).