努力折扣基于奖励的控制分配:一个神经动力学的视角
Ya Zheng1, Mang Zhang2, Menglin Wu3
1Department of Psychology, Guangzhou University, Guangzhou, China.
Psychophysiology
|October 4, 2023
概括
奖励期望引导认知控制,但努力影响了这个过程. 神经活动表明,奖励提高了绩效,但高努力降低了这一好处,这表明在资源分配中进行了成本效益分析.
科学领域:
- 认知神经科学 认知神经科学
- 神经经济学 神经经济学
背景情况:
- 认知和神经资源的分配主要是由预期的奖励驱动的.
- 努力支出对基于奖励的控制分配的影响仍未得到充分探索.
研究的目的:
- 调查努力支出如何调节基于奖励预期的控制分配.
- 通过与事件相关的潜能 (ERP) 检查这种相互作用背后的神经动态.
主要方法:
- 34名参与者完成了一项基于努力的货币激励延迟任务.
- 使用脑电图 (EEG) 来记录神经活动.
- 通过在目标刺激中的不同噪音水平来操纵力度需求.
主要成果:
- 在行为方面,参与者在奖励试验中表现出更快的反应时间 (RTs),而不管他们的努力如何.
- ERP揭示了奖励期望促进神经动态,从提示评估 (提示-P3) 到控制准备 (CNV) 和参与 (目标-P3).
- 通过奖励的神经促进因控制准备和参与期间的高精力而减少,但不是提示评估.
结论:
- 控制分配受到奖励和努力的动态影响.
- 神经机制支持成本效益分析,根据奖励和努力分配认知资源.
- 具体而言,在控制处理的后期阶段,劳动力支出特别抵消了与奖励相关的神经促进.
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