平行对立的记忆的整合是记忆灭绝的基础
Johannes Felsenberg1, Pedro F Jacob1, Thomas Walker1
1Centre for Neural Circuits and Behaviour, The University of Oxford, Tinsley Building, Mansfield Road, Oxford OX1 3SR, UK.
Cell
|September 25, 2018
概括
记住没有惩罚是积极的经历,需要特定的多巴胺基神经元来消灭记忆. 这个过程将体输出神经元中的相互矛盾的记忆整合在一起,以指导行为.
科学领域:
- 神经科学是一个神经科学.
- 动物行为 动物行为
- 记忆研究 记忆研究
背景情况:
- 动物从连续的经验中学习,整合支持和矛盾的证据.
- 记忆灭绝,通过在没有惩罚的情况下体验预测线索来抑制恐惧反应,发生在各种物种中.
研究的目的:
- 为了研究底层神经机制的记忆灭绝在Drosophila.
- 为了确定惩罚的省略是否被记住为积极的经验.
主要方法:
- 利用Drosophila作为一个模型生物.
- 运用功能成像来观察体输出神经元网络中的神经活动 (痕).
- 应用光和超结构解剖学研究神经元连接.
主要成果:
- 确定了特定的多巴胺基神经元,对于厌恶性记忆灭绝至关重要.
- 在同一个神经元网络内观察到对厌恶性和食欲性灭绝记忆的同时存在的细胞内痕迹.
- 证明特定神经元的灭绝引起的可塑性可以中和以前建立的气味反应.
结论:
- 果虫记得没有惩罚是一种积极的经历.
- 平行竞争的记忆被集成到体输出神经元中.
- 通过积累和整合冲突事件的记忆来跟踪学习期望的准确性.
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