Human Informatics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan.
Human Informatics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan.
Biol Psychol. 2023 Jan;176:108471. doi: 10.1016/j.biopsycho.2022.108471. Epub 2022 Dec 1.
This study investigates whether decision-making under uncertainty is influenced by the cardiac cycle. To test this hypothesis, we examined the influence of the cardiac cycle on an individual's decision-making process in a gambling experiment. Participants were asked to choose one option with a sure payout or uncertain option with varying degrees of winning probability, ambiguity, and monetary amounts. The onset of presentation of the options is timed to coincide with either cardiac ventricular systole or diastole. The results show that, for most participants, the risk aversion score was lower in the systole trial than in the diastole trial. Model-based exploratory analysis revealed that the higher propensity to take risks in the systole trial compared with that in the diastole trial could be captured better by the change in the gambling bias against the utility of the risky options, rather than by a change in risk attitude. The results provide evidence that the natural fluctuation of cardiac afferent signals can affect risky decision-making.
本研究旨在探究不确定性下的决策是否受到心脏周期的影响。为了验证这一假设，我们在一项赌博实验中考察了心脏周期对个体决策过程的影响。参与者被要求在确定的奖金和不确定的奖金之间进行选择，其中不确定的奖金具有不同的获胜概率、模糊性和货币金额。选项呈现的起始时间与心室收缩期或舒张期相吻合。结果表明，对于大多数参与者来说，在收缩期试验中，风险厌恶评分低于舒张期试验。基于模型的探索性分析表明，与舒张期试验相比，收缩期试验中人们更倾向于冒险，这可以更好地通过赌博偏差对风险选项的效用的变化来解释，而不是通过风险态度的变化来解释。研究结果表明，心脏传入信号的自然波动会影响风险决策。
