自然声音的发育编码在老鼠听觉皮层中的自然声音
Stefano Zucca1,2, Chiara La Rosa1,2, Tommaso Fellin3
1Department of Life Sciences and Systems Biology (DBIOS), University of Turin, via Accademia Albertina 13, 10123 Turin, Italy.
Cerebral cortex (New York, N.Y. : 1991)
|November 6, 2024
概括
小鼠的听觉皮层神经元早在出生后的第12天就会对超声波发声做出反应. 这些早期反应形成了功能性子网络,对于在年轻小鼠中发展社会沟通至关重要.
科学领域:
- 神经科学是一个神经科学.
- 听觉神经科学 听觉神经科学
- 发育神经科学的发展神经科学.
背景情况:
- 小鼠使用超声波发声 (USVs) 来进行社交行为.
- 听觉皮层 (ACx) 在成年人中处理USV,但生命早期的表征是未知的.
研究的目的:
- 研究小鼠发育中的听觉皮层中USVs早期神经元的表现.
- 描述ACx对USV和其他听觉刺激的反应的发育轨迹.
主要方法:
- 在小鼠听觉皮层的体内两光子成像 2/3.3.
- 从出生后第12天 (P12) 到P21日对USVs,纯色调和调制扫描的神经元反应的分析.
主要成果:
- 早在P12-P13时,ACx神经元就对USV音节做出了反应,随着时间的推移,响应能力越来越强.
- 在P14时,纯音响显示频率偏好,但不是音节偏好.
- USVs,纯色调和扫描激活了P14的大部分非重叠的神经元.
- 响应同一刺激的神经元保持相关的自发活动,形成功能子网络.
结论:
- 鼠标的听觉皮层在生命早期发展出代表USV的能力.
- 用于听觉处理的功能子网络在早期开发过程中出现.
- 这些发现提供了关于发展社会沟通的神经基础的见解.
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