脑小横直流刺激对在冲击威胁下逆转学习表现的影响
Eline S Kruithof1, Yvette Witteveen1, Eleni Kalligeri Skentzou1
1Department of Experimental Psychology, Helmholtz Institute, Utrecht University, Heidelberglaan 1, 3584 CS, Utrecht, the Netherlands.
概括
这项研究探讨了小脑横向化和动机. 小脑的跨直流刺激 (tDCS) 影响了基于焦虑和冲动水平的逆向学习,支持了动机方向假设.
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
- 行为神经科学 行为神经科学
背景情况:
- 大脑小叶横向化假设为避免 (左主导) 和接近 (右主导) 动机设定了不同的后脑小叶活动模式.
- 了解小脑在动机和情绪调节中的作用对于解决焦虑和愤怒相关疾病至关重要.
研究的目的:
- 通过使用行为任务来研究动机方向的小脑横向化假设.
- 为了检查大脑小脑横直流刺激 (tDCS) 对规则学习期间与避开相关的行为在冲击威胁下的影响.
- 探索大脑tDCS对逆向学习的影响的情感状态和特征依赖调制.
主要方法:
- 一个随机的,双盲的,模拟控制的,在90名健康成年人之间进行了实验.
- 参与者在进行逆向学习的博任务时,接受了主动或假的左阳极-右阴极大脑tDCS.
- 对自我报告的焦虑,愤怒和冲动性进行了评估,以分析情感影响.
主要成果:
- 没有观察到小脑tDCS对逆转学习表现的整体影响.
- 在活跃的tDCS组中,更高的冲击焦虑与首次逆转后改善的逆转学习相关.
- 提升的特征冲动性与活跃的tDCS组第二次逆转后逆转学习减少有关.
结论:
- 这些发现支持动机方向的小脑横向化假设.
- 大脑细胞tDCS对逆向学习的影响是由个体情绪状态和特征,特别是焦虑和冲动性,在情境上调节的.
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