条状神经元的活动反映了程序记忆的动态编码和重新编码
Terra D Barnes1, Yasuo Kubota, Dan Hu
1Department of Brain and Cognitive Sciences and the McGovern Institute for Brain Research, Massachusetts Institute of Technology, 43 Vassar Street, 46-6133, Cambridge, Massachusetts 02139, USA.
Nature
|October 21, 2005
概括
习惯的形成和灭绝涉及大脑感官运动条纹体中的动态神经变化. 这些在皮层-基底质回路中的神经模式与学习和再学习期间的行为转变有关.
科学领域:
- 神经科学是一个神经科学.
- 行为科学 行为科学
- 计算神经科学是一种神经科学.
背景情况:
- 习惯形成需要大量的重复,而习惯的灭绝是困难的.
- 恢复习惯可能很快,即使在有限的线索暴露后.
- 感觉运动条纹体对于基本格lia电路中的习惯形成至关重要.
研究的目的:
- 为了研究底层习惯学习动态的神经机制.
- 检查在习惯形成,灭绝和重新获取期间感觉运动条纹体内神经元活动的变化.
- 为了将神经活动模式与行为表现相关联.
主要方法:
- 在老鼠的感觉运动条纹体中长期记录多个神经元.
- 鼠经历了连续的训练:以奖励为基础的程序任务,灭绝和重新获取.
- 分析集体触发模式和与任务无关的神经元活动.
主要成果:
- 状输出神经元活动在学习阶段显示出显著的变化.
- 与任务相关的合奏射击模式形成,反转,并重新出现.
- 与任务无关的射击被抑制,然后反弹,然后再次抑制.
- 神经活动的变化与行为表现的变化有很强的相关性.
结论:
- 在皮质 - 基底腺回路内,任务表示的动态变化伴随着习惯学习.
- 这些神经动态可能代表大脑在习惯形成过程中的探索-利用行为.
- 了解这些机制为习惯可塑性和行为控制提供了见解.
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