Max Planck University College London Centre for Computational Psychiatry and Ageing Research, University College London, Queen Square Institute of Neurology, London, UK.
Wellcome Centre for Human Neuroimaging, University College London, Queen Square Institute of Neurology, London, UK.
Nat Commun. 2024 May 20;15(1):4269. doi: 10.1038/s41467-024-48547-z.
When making choices, individuals differ from one another, as well as from normativity, in how they weigh different types of information. One explanation for this relates to idiosyncratic preferences in what information individuals represent when evaluating choice options. Here, we test this explanation with a simple risky-decision making task, combined with magnetoencephalography (MEG). We examine the relationship between individual differences in behavioral markers of information weighting and neural representation of stimuli pertinent to incorporating that information. We find that the extent to which individuals (N = 19) behaviorally weight probability versus reward information is related to how preferentially they neurally represent stimuli most informative for making probability and reward comparisons. These results are further validated in an additional behavioral experiment (N = 88) that measures stimulus representation as the latency of perceptual detection following priming. Overall, the results suggest that differences in the information individuals consider during choice relate to their risk-taking tendencies.
当做出选择时，个体在权衡不同类型的信息时，会表现出与规范性不同的差异。一种解释是，这与个体在评估选择选项时所代表的信息存在特殊偏好有关。在这里，我们使用一种简单的风险决策任务，结合脑磁图（MEG）来检验这一解释。我们研究了行为标记信息加权的个体差异与与纳入这些信息相关的刺激神经表示之间的关系。我们发现，个体在行为上加权概率与奖励信息的程度与他们在神经上优先表示最有助于进行概率和奖励比较的刺激之间存在相关性。这些结果在一项额外的行为实验（N=88）中得到了进一步验证，该实验通过启动后的感知检测潜伏期来衡量刺激表示。总体而言，结果表明，个体在选择过程中考虑的信息差异与他们的冒险倾向有关。
