Fig. 2. Altered GS topography in different psychiatric disorders.
The GS topography is significantly altered in the different phases of bipolar disorder, with increased GSCORR in hippocampus (and parahippocampus/fusiform gyrus) in bipolar depression and motor cortex in bipolar mania (from Zhang et al.22). In major depressive disorder, the GS topography is increased in default-mode regions that shows abnormally strong global functional connectivity with all other regions, i.e., non-DMN in the rest of the brain (from Scalabrini et al.89). GS Global signal, GSCORR Global signal correlation, C Control group, D Depression, M Mania, E Euthymic, MDD Major depressive disorder, HC Healthy control, GSR Global signal regression.