Figure 4 | Scientific Reports

Figure 4

From: Association between aphasia severity and brain network alterations after stroke assessed using the electroencephalographic phase synchrony index

Figure 4

Results of analyses for the spatially adjacent PSIs. Comparison of PSIs in stroke patients with those in healthy controls. A box-and-whisker plot indicating values of the (a) F3F4-PSI, (b) F3P3-PSI, and (c) F4P4-PSI of stroke patients and healthy controls (Mann‒Whitney U test, FDR corrected). In contrast to the PSIs between motor language-related regions, all spatially adjacent PSIs show no significant difference between stroke patients and healthy controls. Correlation coefficients of the F3F4/F3P3/F4P4-PSIs with ARSsp scores. A polygonal line graph of the correlation coefficients for the correlation of (d) F3F4-PSI, (e) F3P3-PSI, and (f) F4P4-PSI with ARSsp scores (Spearman’s correlation analysis, FDR corrected). In contrast to the PSIs between motor language-related regions, all spatially adjacent PSIs show no significant correlations in any frequency band. ARSsp Aphasia Rating Scale speech, FDR false discovery rate, PSI phase synchrony index.

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