Figure 1
From: Increased similarity of neural responses to experienced and empathic distress in costly altruism
Experimental design. Trials were introduced by an audio cue, which signaled either an aversive or non-aversive trial type. A second audio cue signaled the onset of the painful stimulus in the aversive trial type, and had no meaning during the non-aversive trial type. In the first run of the experiment, subjects viewed their study partner experiencing the task. The second run was identical to the first, except for the addition of a verbal empathy prompt prior to the task. During the third run, subjects experienced the stimulus first-hand.
