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. 2019 Apr 23;14(6):2799–2816. doi: 10.1007/s11682-019-00099-3

Fig. 2.

Fig. 2

PRISMA flow Diagram of study selection. Diagram shows the search results, removal of duplicates, and final articles included after title and abstract screening and full text examination. A total of 46 studies fitting the inclusion criteria were added. The functional categories assessed in meta-analysis include speech, cognition, emotion, perception, affective-cognition, and behavior