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Here we directly recorded local field potentials from the OrbitoFrontal Cortex (OFC) in five human subjects performing a financial decision-making task. We observed a striking increase in gamma-band (36\u201350\u2009Hz) oscillatory activity that reflected subjects\u2019 decisions to make riskier choices. Additionally, these gamma rhythms were linked back to mismatched expectations or \u201cluck\u201d occurring in past trials. Specifically, when a subject expected to win but lost, the trial was defined as \u201cunlucky\u201d and when the subject expected to lose but won, the trial was defined as \u201clucky\u201d. Finally, a fading memory model of luck correlated to an objective measure of emotion, heart rate variability. Our findings suggest OFC may play a pivotal role in processing a subject\u2019s internal (emotional) state during financial decision-making, a particularly interesting result in light of the more recent \u201ccognitive map\u201d theory of OFC function.<\/jats:p>","DOI":"10.1038\/srep36206","type":"journal-article","created":{"date-parts":[[2016,11,10]],"date-time":"2016-11-10T10:07:34Z","timestamp":1478772454000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Lucky Rhythms in Orbitofrontal Cortex Bias Gambling Decisions in Humans"],"prefix":"10.1038","volume":"6","author":[{"given":"Pierre","family":"Sacr\u00e9","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthew S. 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