Yang Yuxue, Sibert Catherine L, Stocco Andrea
Department of Psychology, University of Washington; Seattle, WA, USA 98195.
Science and Engineering, University of Groningen; Groningen, Netherlands.
bioRxiv. 2024 Mar 14:2023.01.10.523458. doi: 10.1101/2023.01.10.523458.
Experiential decision-making can be explained as a result of either memory-based or reinforcement-based processes. Here, for the first time, we show that individual preferences between a memory-based and a reinforcement-based strategy, even when the two are functionally equivalent in terms of expected payoff, are adaptively shaped by individual differences in resting-state brain connectivity between the corresponding brain regions. Using computational cognitive models to identify which mechanism was most likely used by each participant, we found that individuals with comparatively stronger connectivity between memory regions prefer a memory-based strategy, while individuals with comparatively stronger connectivity between sensorimotor and habit-formation regions preferentially rely on a reinforcement-based strategy. These results suggest that human decision-making is adaptive and sensitive to the neural costs associated with different strategies.
经验性决策可以解释为基于记忆或基于强化的过程的结果。在此，我们首次表明，即使基于记忆和基于强化的策略在预期收益方面功能等效，个体在这两种策略之间的偏好也会受到相应脑区静息态脑连接性个体差异的适应性塑造。通过使用计算认知模型来确定每个参与者最可能使用的机制，我们发现记忆区域之间连接性相对较强的个体更喜欢基于记忆的策略，而感觉运动和习惯形成区域之间连接性相对较强的个体则优先依赖基于强化的策略。这些结果表明，人类决策具有适应性，并且对与不同策略相关的神经成本敏感。
