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前额头信号先于条形信号,用于动机学习中的偏差信用分配
Johannes Algermissen1, Jennifer C Swart2, René Scheeringa2,3
1Radboud University, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands. johannes.algermissen@donders.ru.nl.
Nature communications
|January 3, 2024
概括
人类的行为受到潜在的奖励和惩罚的影响. 新的研究表明,学习中的这些动机偏见起源于大脑皮质,然后到达皮质下区域.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 决策 决策 决策 决策
背景情况:
- 人类的行为被预期的结果所调节,偏好奖励而不是惩罚.
- 动机偏见源于响应选择和偏见学习机制.
- 这些偏差的神经支,特别是皮质与皮质下区域的作用,仍然不完全理解.
研究的目的:
- 研究学习中的动机偏差的神经起源.
- 在偏差预测错误编码过程中确定皮层和皮层下区域神经活动的时间序列.
主要方法:
- 同时使用脑电图 (EEG) 和功能磁共振成像 (fMRI).
- 这项研究跟踪了不同大脑区域中偏见预测错误的编码.
主要成果:
- 在皮层区域观察到有偏差的预测错误,包括背部前和后带皮层.
- 皮质活动先于皮质下区域的活动,特别是条纹体.
- 这种时间顺序表明皮质处理在动机学习偏差中起着重要作用.
结论:
- 偏差学习不仅仅是基底的功能,还涉及前额叶皮层的贡献.
- 动机偏见代表一种复杂且潜在的灵活机制,受到皮质处理的影响.
- 这些发现推动了我们对决策和动机行为的神经基础的理解.
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