Lucky Rhythms in Orbitofrontal Cortex Bias Gambling Decisions in Humans
Lucky Rhythms in Orbitofrontal Cortex Bias Gambling Decisions in Humans
复制标题
眶额皮层的幸运节奏导致人类赌博决策偏差
作者：
Pierre Sacré;M. Kerr;Kevin Kahn;J. González;Juan Bulacio;Hyun;Matthew A. Johnson;Susan Thompson;Jaes C. Jones;V. Chib;J. Gale;S. Sarma
众所周知，情绪会影响我们的决定，但这种偏见效应的神经基础还没有得到很好的理解。在此，我们直接记录了5名受试者在执行财务决策任务时眶额叶皮层（OFC）的局部场电位。我们观察到伽马波段（36-50赫兹）振荡活动的显著增加，这反映了受试者做出更冒险选择的决定。此外，这些伽马节律与过去试验中出现的不匹配的期望或“运气”有关。具体来说，当受试者预期会赢但失败时，试验被定义为“不幸”，当受试者预期会输但成功时，试验被定义为“幸运”。最后，一个关于运气的记忆衰退模型与情绪的客观测量——心率变异性相关联。我们的研究结果表明，在财务决策过程中，OFC可能在处理受试者的内部（情绪）状态方面发挥着关键作用，鉴于最近OFC功能的“认知地图”理论，这是一个特别有趣的结果。
It is well established that emotions influence our decisions, yet the neural basis of this biasing effect is not well understood. 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 (36–50 Hz) oscillatory activity that reflected subjects’ decisions to make riskier choices. Additionally, these gamma rhythms were linked back to mismatched expectations or “luck” occurring in past trials. Specifically, when a subject expected to win but lost, the trial was defined as “unlucky” and when the subject expected to lose but won, the trial was defined as “lucky”. 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’s internal (emotional) state during financial decision-making, a particularly interesting result in light of the more recent “cognitive map” theory of OFC function.