海和海狮的大脑已经进化为支持声音行为和学习的意志控制
Peter F Cook1,2, Andrew A Rouse1,2, Eva Sawyer3
1Marine Mammal Science, New College of Florida, Sarasota, FL, USA.
概括
像海一样的脚动物拥有先进的声控,具有独特的神经连接,支持声学和模仿. 这项研究揭示了海和海狮的复杂声调的进化大脑适应.
科学领域:
- 神经科学是一个神经科学.
- 动物学 动物学
- 进化生物学 进化生物学
背景情况:
- 松脚动物表现出复杂的意志呼吸控制.
- 体海表明声乐生产的学习,包括模仿.
- 了解足动物声控的神经基础至关重要.
研究的目的:
- 为了研究神经适应性在足动物中进行意志声控的神经适应性的基因谱.
- 为了识别支持声部运动控制的直接神经连接.
- 探索与声乐学习和模仿相关的途径.
主要方法:
- 组织学被用来检查神经结构.
- 活体扩散磁共振成像路谱被用来绘制神经通路的地图.
- 进行了跨类物种和大猩猩的比较分析.
主要成果:
- 类和类海,不同于大猩猩,在声动皮层和声动脑干核之间有直接的连接.
- 港湾海在前腹侧丘脑和声前运动皮层之间表现出增强的连接性.
- 体海显示听觉前运动通路,可能参与发育性呼叫学习.
结论:
- 松脚动物表现出一系列的神经适应,支持自愿声控.
- 在海和海狮中存在直接的皮质-大脑干连接,促进发声.
- 特定的前脑电路和听觉前运动通路与足动物的声音学习和模仿有关.
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