The Default Mode of Human Brain Function Primes the Intentional Stance

Description: Humans readily adopt an intentional stance to other people, comprehending their behavior as guided by unobservable mental states such as belief, desire, and intention. We used fMRI in healthy adults to test the hypothesis that this stance is primed by the default mode of human brain function present when the mind is at rest. We report three findings that support this hypothesis. First, brain regions activated by actively adopting an intentional rather than nonintentional stance to another person were anatomically similar to those demonstrating default responses to a fixation baseline condition. Second, moment-to-moment variation in default activity in the dorsomedial pFC was related to the ease with which participants applied an intentional-but not nonintentional-stance to a social stimulus presented moments later. Finally, individuals who showed stronger dorsomedial pFC activity at baseline in a separate task were generally more efficient when adopting the intentional stance and reported having greater social skills. These results identify a biological basis for the human tendency to adopt the intentional stance. More broadly, they suggest that the brain's default response may have evolved, in part, as a response to life in a social world.

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Add DateMarch 12, 2015, 1:14 a.m.
Uploaded byspunt
Related article DOI10.1162/jocn_a_00785
Related article authorsRobert P. Spunt, Meghan L. Meyer and Matthew D. Lieberman
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