Fig. 4From: Testing the therapeutic effects of transcranial direct current stimulation (tDCS) in semantic dementia: a double blind, sham controlled, randomized clinical trialTwo illustrative trials of the executive function (EXE) task. a Trial in the verbal modality. For each trial participants have to decide which of the test items presented on the bottom of the screen begins and ends with the same letter as the target item (abeille (bee) - target item, abysse (abyss) - test item, abri (shelter) - distractor). b Trial in the picture modality. For each trial subjects have to decide which of the test items on the bottom of the screen has the same color or the same geometric form as the target itemBack to article page