Figure 3.

Planning-related activity in the right pSTS of the sender's brain was modulated by the difficulty of selecting an adequate communicative behaviour. (A) When the sender could indicate the goal position of the receiver's token (blue rectangle) by aligning his token (yellow rectangle) with her goal position, there was no significant right pSTS activity (in magenta). (B) When the sender could not match the goal orientation of the receiver's token (blue rectangle) with his token (yellow circle), there was robust right pSTS activity (in orange), both for correct and incorrect trials. Other conventions as in Figures 1 and 2.