嵌套电路介绍了发声的决定
Shuyun Xiao1, Valerie Michael1, Richard Mooney1
1Department of Neurobiology, Duke University, Durham, United States.
eLife
|June 14, 2023
概括
大脑电路通过权衡风险和好处来控制发音. 这项研究揭示了前视区域 (POA) 和杏仁体 (Amg) 如何相互作用,以调节小鼠的超声波发声 (USV).
科学领域:
- 神经科学是一个神经科学.
- 动物行为 动物行为
- 计算生物学 计算生物学
背景情况:
- 发音对于社会互动至关重要,但也带有风险.
- 大脑电路必须平衡发声的好处和风险.
- 之前的研究已经确定了近水管灰色 (PAG-USV) 神经元对于超声波发声 (USV) 是必不可少的.
研究的目的:
- 调查控制USV产生的神经机制.
- 了解声音促进和声音抑制信号是如何集成的.
- 阐明前视区域 (POA) 和杏仁体 (Amg) 在调节声乐行为的作用.
主要方法:
- 电力生理学 电力生理学
- 视觉遗传学 视觉遗传学
- 在小鼠的行为分析.
- 神经电路映射的神经电路映射
主要成果:
- 抑制USV的杏仁体 (AmgC/M-PAG) 神经元被捕食者的线索和抑制USV的社会背景激活.
- 投射到PAG和Amg的神经元的POA神经元抑制AmgC/M-PAG的神经元.
- 激活这些POA神经元会触发雄性小鼠的USV产生.
结论:
- 一个涉及POA,Amg和PAG的等级电路调节了USV的生产.
- 环境和社会线索汇聚在这个电路中,影响声音决策.
- 这个电路为理解语音通信的神经基础提供了一个框架.
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