Anatomical dissociation of intracerebral signals for reward and punishment prediction errors in humans
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2021
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Gueguen, Maëlle C. M.
Lopez-Persem, Alizée
Billeke, Pablo
Lachaux, Jean-Philippe
Rheims, Sylvain
Kahane, Philippe
Minotti, Lorella
David, Olivier
Pessiglione, Mathias
Bastin, Julien
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Whether maximizing rewards and minimizing punishments rely on distinct brain systems remains debated, given inconsistent results coming from human neuroimaging and animal electrophysiology studies. Bridging the gap across techniques, we recorded intracerebral activity from twenty participants while they performed an instrumental learning task. We found that both reward and punishment prediction errors (PE), estimated from computational modeling of choice behavior, correlate positively with broadband gamma activity (BGA) in several brain regions. In all cases, BGA scaled positively with the outcome (reward or punishment versus nothing) and negatively with the expectation (predictability of reward or punishment). However, reward PE were better signaled in some regions (such as the ventromedial prefrontal and lateral orbitofrontal cortex), and punishment PE in other regions (such as the anterior insula and dorsolateral prefrontal cortex). These regions might therefore belong to brain systems that differentially contribute to the repetition of rewarded choices and the avoidance of punished choices.
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Cognitive Neuroscience , Punishment , Reward , Magnetic Resonance Imaging , Humans
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Gueguen MCM, Lopez-Persem A, Billeke P, Lachaux JP, Rheims S, Kahane P, Minotti L, David O, Pessiglione M, Bastin J. Anatomical dissociation of intracerebral signals for reward and punishment prediction errors in humans. Nat Commun. 2021 Jun 7;12(1):3344