Presentation of network structure Figure 1 shows a network graph comparing anodal, cathodal, and dual tDCS and their corresponding stimulation location with their control interventions for improving functional communication after stroke. Figure 2 shows a network graph comparing anodal, cathodal, and dual tDCS and their corresponding stimulation location with their control interventions for improving language function (naming nouns) after stroke and Figure 3 for improving naming verbs. Figure 4 shows a network graph comparing tDCS and its corresponding stimulation location with their control interventions regarding safety (measured by the number of dropouts and adverse events).