中部前额叶皮质在风险和时间偏好中的作用:一项tDCS研究
Chao Liu1, Hongzhen Lei1, Yuzhen Li2
1School of International Business, Shaanxi Normal University, Shaanxi, 710019, China.
Acta psychologica
|October 10, 2025
概括
这项研究表明,通过通过直流刺激 (tDCS) 来改变中间前额叶皮层 (mPFC) 活动,会影响经济决策. 具体来说,阴极刺激使参与者更喜欢更安全的选择和更早的奖励,影响了风险和时间偏好.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 行为经济学是一种行为经济学.
背景情况:
- 风险和时间偏好是经济决策的关键.
- 中部前额叶皮层 (mPFC) 活动与估值有关,但其在风险和时间选择中的作用的因果证据有限.
研究的目的:
- 调查mPFC在调节风险承担和时间间选择中的因果作用.
- 确定扰乱mPFC活动是否会影响这两个领域的经济决策.
主要方法:
- 使用跨直流刺激 (tDCS) 与道,阴道或假条件针对mPFC.
- 管理任务包括有风险的彩票和凸时间预算任务来评估权衡.
主要成果:
- 对mPFC的阴极tDCS导致对安全彩票的偏好增加,而不是风险的彩票.
- 接受阴极刺激的参与者也更倾向于选择较早的奖励而不是延迟的奖励.
- 这些对风险和时间偏好的影响具有统计学意义.
结论:
- mPFC在共同调节风险和时间偏好方面发挥了因果作用.
- 调查结果表明,mPFC支持经济决策的共享估值机制.
- 澄清了mPFC在经济偏好的神经电路中的作用.
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