Agent-specific responses in the cingulate cortex during economic exchanges |
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Authors: | Tomlin Damon Kayali M Amin King-Casas Brooks Anen Cedric Camerer Colin F Quartz Steven R Montague P Read |
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Institution: | Human Neuroimaging Laboratory, Department of Neuroscience, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX 77030, USA. |
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Abstract: | Interactions with other responsive agents lie at the core of all social exchange. During a social exchange with a partner, one fundamental variable that must be computed correctly is who gets credit for a shared outcome; this assignment is crucial for deciding on an optimal level of cooperation that avoids simple exploitation. We carried out an iterated, two-person economic exchange and made simultaneous hemodynamic measurements from each player's brain. These joint measurements revealed agent-specific responses in the social domain ("me" and "not me") arranged in a systematic spatial pattern along the cingulate cortex. This systematic response pattern did not depend on metrical aspects of the exchange, and it disappeared completely in the absence of a responding partner. |
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