Real-time neurofeedback operationalization
Real-time neurofeedback will be calculated using multivariate and univariate real-time functional imaging (MURFI; open source code available at To provide neurofeedback, a separate incremental general linear model (GLM) will be fit via MURFI for each of the voxels in each mask each time a subsequent EPI volume is received. Each GLM will include all prior volumes, and will include nuisance regressors for the 6 head realignment parameters extracted from the Siemens Motion Corrected DICOM headers, as well as a linear drift regressor [