情感推断的内部模型的前额编码
Xiaowei Gu1, Joshua P Johansen2
1RIKEN Center for Brain Science, Wako-shi, Japan. xiaowei.gu@riken.jp.
Nature
|May 14, 2025
概括
动物的背中前额皮层 (dmPFC) 形成灵活的内在情感模型. 这些模型将感官刺激与厌恶事件联系起来, 能够推断出情感记忆.
科学领域:
- 神经科学
- 认知科学
- 情感学习
背景情况:
- 情感学习通常包括预见负面经历.
- 更高层次的情感学习需要推断直接经验之外的关联.
- 简单的厌恶性学习的脑机理是已知的,但内在情绪模型并未得到充分理解.
研究的目的:
- 研究大脑如何形成和表现内在情感模型.
- 确定推断情感关联的基础的神经机制.
- 了解背中前额叶皮质在情感记忆中的作用.
主要方法:
- 研究了动物dmPFC中的神经元活动.
- 研究了dmPFC神经元如何将感官刺激与厌恶事件 (直接和推断) 联系起来.
- 研究了dmPFC对桃体的投射在表达推断关联中的作用.
主要成果:
- dmPFC神经元编码一种灵活的内在情感模型, 将刺激与直接和推断的厌恶事件联系起来.
- 一个涉及dmPFC细胞招募和稳定的多步编码机制支持推断.
- 投射到桃体的dmPFC神经元对于表示和表达推断的情感关联至关重要.
结论:
- 对于灵活的情感学习和记忆至关重要.
- 这些模型是通过涉及推断的特定神经机制形成的.
- 桃体的dmPFC调节是回忆推断情感记忆的关键.
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