在社会隔离期间,歌鸟神经序列的自我组织
Emily L Mackevicius1, Shijie Gu1, Natalia I Denisenko1
1McGovern Institute for Brain Research, Department of Brain and Cognitive Sciences, MIT, Cambridge, United States.
eLife
|May 30, 2023
概括
导师的经验对于形成鸟歌中的神经序列并不是必不可少的. 然而,如果已经建立了,先前存在的神经序列可能会阻碍新歌的学习.
科学领域:
- 神经科学是一个神经科学.
- 动物行为 动物行为
- 发育生物学 发展生物学
背景情况:
- 行为发展的结果来自天生的因素和外部经验.
- 大脑成熟涉及由感官输入和内在发育程序影响的细胞,网络和功能变化.
- 鸟的学习通常涉及到从导师那里获得发声的神经序列.
研究的目的:
- 区分导师经验与发展过程在形成控制行为的神经序列的贡献.
- 调查导师暴露对于神经序列出现的必要性.
- 了解如何预先存在的神经模式影响获得新的学习行为.
主要方法:
- 在幼鸟中延迟的导师暴露.
- 功能性成像用于监测神经活动和序列形成.
- 在辅导前的神经序列结晶和随后的歌曲学习成功之间的相关性分析.
主要成果:
- 控制行为的神经序列可以独立于导师经验而形成.
- 导师接触可以导致预先存在的神经序列与新学到的歌曲音节的关联.
- 具有高度"结晶"的前辅导神经序列的鸟类不太可能学习新的歌曲音节.
结论:
- 导师的经验不是形成与行为相关的神经序列的先决条件.
- 预先存在的神经组织的程度影响了获得新学习行为的能力.
- 发育过程建立神经模式,可以与后来的体验学习相互作用,并可能限制后来的体验学习.
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