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在皮质 - 基底质电路中进行秘密技能学习
Jonathan D Charlesworth1, Timothy L Warren, Michael S Brainard
1W. M. Keck Center for Integrative Neuroscience, Department of Physiology, University of California, San Francisco, California 94143, USA. jcharles@phy.ucsf.edu
Nature
|June 16, 2012
概括
前脑前脑路径 (AFP) 通过监测结果来暗地学习复杂的技能,而不是通过产生探索性行为. 这种基底性质回路能够快速获得和实施技能.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 动物行为 动物行为
背景情况:
- 技能学习,就像说话和跳舞一样,涉及到逐渐的试错过程.
- 皮层-基底质回路对于技能学习至关重要,但它们的确切功能仍在争论中.
- 演员-关键模型表明,基底腺节在训练期间产生和完善行为.
研究的目的:
- 调查前脑前脑路径 (AFP) 的作用,一个皮质-基底质电路,在复杂的技能学习中.
- 为了确定AFP是否有助于学习过程中的探索性行为变化.
- 阐明AFP促进技能获取和表现的机制.
主要方法:
- 研究孟加拉鸟学习修改他们的歌曲.
- 在训练期间阻止了AFP输出,以评估其在行为变化和学习中的作用.
- 在训练过程中非激活了AFP的输出核,以评估学习的必要性.
- 解锁的AFP输出培训后观察绩效过渡.
主要成果:
- 在歌曲学习期间阻断AFP输出阻止了逐渐的改善.
- 在训练期间非激活AFP的输出核完全抑制了学习.
- 在训练后解锁AFP输出导致了立即的,出色的表现.
- 该AFP学会了实施技能,而不是在实践过程中为探索性变化做出贡献.
结论:
- 通过监测行为后果,而不是通过产生探索性行动,AFP有助于技能学习.
- 基底质回路可以指导其他大脑区域实施成功的行为.
- 该AFP接收到前运动活动的详细效能副本,使得秘密技能获取.
- 基底和运动控制区域之间存在精确的功能连接,以实现性能.
相关概念视频
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E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
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