computing {HEAD ~ an RMS current density estimate} for {TAIL ~ each voxel} from the covariance matrix and the forward solution for that voxel; and 
for
computing { HEAD ~ an RMS current density estimate } for { TAIL ~ each voxel } from the covariance matrix and the forward solution for that voxel ; and
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH