Effective Connectivity Study Guiding the Neuromodulation Intervention in Figurative Language Comprehension Using Optical Neuroimaging

Figure 4

Granger Prediction Estimation generated directional relations measured from HBO2 measurements among significant ROIs in metaphor condition: (a) right Broca/CH12 to left Broca/Ch06 (); (b) right Wernicke/Ch22 to right Broca/Ch12 (); the first yellow circle represents the onset of the first trial over 500 ms, and the second one represents the stimulus presentation period of the first trial over 2200-2700 ms integrating the semantic judgment; (c) causality strength across ROI () in metaphor condition during the experimental task, where it illustrated significant causal effect (higher and lower causality strength) versus nonsignificant causal effects.

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