Neural correlates of social exchanges during the Prisoner's Dilemma game in depression

Psychological Medicine
V B GradinJ D Steele

Abstract

Depression is a disabling disorder that significantly impacts on the interpersonal functioning of individuals. However, little is known about the neural substrates of such difficulties. In the last few years neuroeconomics, which combines imaging with multiplayer behavioural economic paradigms, has been used to study the neural substrates of normal and abnormal interpersonal interactions. This study used functional magnetic resonance imaging to investigate neural activity in unmedicated depressed participants (n = 25) and matched healthy controls (n = 25). During scanning, participants played a behavioural economic game, the Prisoner's Dilemma. In this game, the participant and a co-player independently choose either to cooperate or not cooperate with each other. Depressed participants reported higher levels of negative feelings (betrayal, guilt) during the game than did controls. Neural activation was compared between 'imbalanced' events [when one of the players cooperated and the other defected ('CD' and 'DC')] and 'draw' events [when both players either cooperated or defected ('CC' and 'DD')]. Participants preferentially activated the anterior insula and the dorsolateral prefrontal cortex (DLPFC), a region implicated in cogn...Continue Reading

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Citations

May 2, 2019·Molecular Psychiatry·Siân E RobsonKristin K Nicodemus
Mar 6, 2018·Current Behavioral Neuroscience Reports·Gabriela Alarcón, Erika E Forbes
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Dec 11, 2020·Social Neuroscience·Francisco Cervantes ConstantinoVictoria B Gradin

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