时间间选择中收益损失差异的计算和神经相关值
Yongcong Shao1, Xiao Zhong2, Letong Wang3
1School of Psychology, Beijing Sport University, 100084 Beijing, China; Laboratory of Sports Stress and Adaptation of General Administration of Sport, Beijing 100084, China.
Consciousness and cognition
|February 7, 2026
概括
人们在面对潜在的收益与损失时做出不同的决定. 这项研究使用脑成像和计算建模来揭示这些收益损失差异如何影响决策动态和大脑活动.
科学领域:
- 神经经济学 神经经济学
- 认知神经科学 认知神经科学
- 决策科学 决策科学 决策科学
背景情况:
- 时间间选择显示了收益和损失背景之间的系统差异.
- 这些差异的计算机制和神经相关性尚未完全理解.
研究的目的:
- 调查时间间决策中收益-损失不对称性的计算机制和神经相关性.
主要方法:
- 在功能磁共振成像 (fMRI) 过程中,53名健康成年人在收益和损失上下文中执行了延迟折扣任务.
- 使用漂移扩散建模 (DDM) 分析行为数据.
主要成果:
- 在行为上,参与者在收益背景下选择了较小的早期选择,而不是在损失背景下选择较大的后期选择.
- DDM揭示了取决于上下文的决策动态:更高的漂移率,更强的起点偏差,以及在增益背景下更长的非决策时间.
- 在增益背景下,fMRI显示在时间间选择期间,双边海马体和右侧胰岛的激活增加.
结论:
- 收益-损失背景显著影响决策动态和相关的神经活动.
- 结果提供了在间时间决策中收益-损失不对称性的融合计算和神经证据.
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