The subspace reprojection applied to subject 1. The three plots on top represent the coronal, sagittal, and transversal projections of the three-dimensional coherence map, before the application of beamspace reprojection. The three plots on the bottom depict the same projections of estimated activity, after the reduction of spatial noise. The technique is used to enhance the visualization of the coherence map. Both sets of plots refer to the same color scale (interval ranges from 0 to 0.008 of estimated coherence), and “jet” colormap is used (blue = 0 and red = 0.008). The plots are interpolated from a coarser grid (about 1 cm resolution along the Cartesian axes).
