Figure 4. Homotopic functional connectivity within the ipsilesional hemisphere.
Group-averaged correlation maps of interhemispheric homotopic functional connectivity for all pixels within our field of view reveal regional differences in observed connectivity after focal ischemia that depend on stroke severity. Note the overall trend that the brain becomes gradually less connected (connectivity goes to zero) as the injury becomes larger. Functional connectivity values are Fisher z-transformed Pearson correlations.