Fig. 1.

Experimental design. Senders and perceivers participated in 10 runs of fMRI. Colours indicate emotion periods; each colour indicates a different emotion (joy, anger, disgust, fear, or sadness), grey indicates resting periods. The order of runs was chosen by the sender with the restriction that each emotion had to be chosen once before an emotion could occur a second time. The sender's facial expression was video-taped throughout scanning and shown to the perceiver while he was scanned immediately after scanning of the sender had been completed.