在前极皮层进行的非侵入性大脑刺激促进了人们在寻找食物等顺序选择任务中愿意进行认知努力的意愿
Mario Bogdanov1,2,3, Laura A Bustamante4, Sean Devine5
1Department of Psychology, McGill University, Montreal, Quebec H3A 1G1, Canada mbogdanov1@mclean.harvard.edu.
概括
前极皮质 (FPC) 激发了艰苦的决策. 激发性刺激FPC减少了任务困难对决策的影响,这表明它在基于努力的选择中起着关键作用.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 决策科学 决策科学 决策科学
背景情况:
- 避免认知努力,除非奖励证明了成本的合理性.
- 之前的研究表明,前极皮层 (FPC) 参与基于努力的决策.
- FPC在激励努力中的作用需要在复杂的,连续的选择中进行检查.
研究的目的:
- 调查FPC在努力激励中的作用是否延伸到具有可变任务需求和奖励的顺序决策.
- 探索FPC在使用跨直流刺激 (tDCS) 进行基于努力的选择中的因果关系.
主要方法:
- 一个双盲,主题内设计,有46名参与者.
- 在努力食任务期间,对右FPC应用Anodal或假tDCS.
- 这个任务需要在资源采集和认知努力之间做出选择,以获得奖励,环境特定的困难.
主要成果:
- 当旅行费用较高时,参与者表现出更高的退出门 (在补丁中停留更长时间),这表明感知到的旅行费用增加了.
- 与假冒刺激相比,FPC的阳极tDCS显著降低了高和低力环境之间的退出值差异.
- 个人差异显示,在tDCS下,减少的动机与较大的旅行成本降低相关.
结论:
- 研究结果支持FPC在激发认知上的努力行为方面的因果作用.
- FPC的功能扩展到生态有效的连续决策场景.
- 针对FPC的tDCS显示出增强动机的潜力,并可能具有临床应用.
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