Poster D21, Monday, March 26, 8:00-10:00 am, Exhibit Hall C
Social perspective taking shapes both eye-movements and brain hemodynamic activity during viewing of drama movie
Iiro P. Jääskeläinen1, Mareike Bacha-Trams1, Elisa Ryyppö1, Enrico Glerean1, Mikko Sams1; 1Aalto University School of Science, Espoo, Finland
Putting oneself into the shoes of others is an important aspect of human social cognition. Here, we measured brain hemodynamic activity and eye-movements as subjects were viewing a shortened 24-min version of a drama movie (“My Sister’s Keeper”) from the perspectives of either of two main protagonists, to-be-organ donor, and recipient, sisters. Significant differences in inter-subject correlation (ISC) of eye-gaze fixations were observed in 50% of consecutive two-second time windows. In 60% of these time windows, the eye-gaze ISC was higher when subjects were watching the movie from the to-be-organ donor, rather than during to-be-organ recipient, perspective. Further, within-perspective analysis showed higher proportion of fixations on the to-be-organ-recipient than donor sister during both perspectives. ISC of brain activity was significantly higher during the to-be-organ donor vs. recipient perspective in dorsolateral and inferior prefrontal, lateral and inferior occipital, and inferior-anterior temporal areas. In the reverse contrast, stronger ISC of brain activity was observed in superior temporal, posterior frontal, and anterior parietal areas. Taken together, our findings indicate that perspective taking during watching of a moral dilemma shapes both eye-movement patterns and similarity of brain activity in both sensory and higher-order cortical regions. Overall, given that there were robust differences between the two social perspectives in both brain regions exhibiting ISC and in eye-gaze patterns, it seems that the social setting, as well as goals and relationships of the protagonists in the movie, dynamically modulate the set of brain regions involved in adopting one vs. the other social perspective.
Topic Area: EMOTION & SOCIAL: Person perception