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Effects of source of action planning on fMRI activations. (A) 3D overlay of group activation map (N = 14) onto a standardized T1-weighted MRI. (IGAP vs. rest in pink, EGAP vs. rest in green). (B) Estimated effect of source of planning as indicated by regional beta weights. The pre-SMA and the dorsolateral PFC (DLPFC) showed greater activation for the internally compared to externally guided conditions. *Indicates statistically significant difference at p < 0.005.
