面部手势是通过动态和稳定代码的皮质层次来执行的
Geena R Ianni1, Yuriria Vázquez1, Adam G Rouse2
1Laboratory of Neural Systems, The Rockefeller University, New York, NY, USA.
概括
灵长类动物使用面部手势进行沟通, 新的研究揭示了这些区域在运动前通过独特的时间模式来编码自愿和情绪表达.
科学领域:
- 神经科学
- 灵长类动物的行为
- 发动机控制
背景情况:
- 面部手势对于灵长类动物的交流至关重要,
- 不同的皮层区域涉及到自愿的 (侧面的) 和情绪化的 (中间的) 面部表情.
研究的目的:
- 调查侧面和中间皮质面部运动区域如何编码自愿和情绪面部手势.
- 了解这些区域神经活动的时间动态.
主要方法:
- 从灵长类动物的侧面和中间皮质面部运动区域直接记录单个神经元.
- 在面部手势执行之前和期间分析神经活动模式.
主要成果:
- 侧面和中间皮质区域都编码了自愿和情绪化的面部手势.
- 不同的特定区域的时间活动模式在运动开始之前就区分了手势编码.
- 从动态到时间稳定的手势编码连续存在于下游的皮质投影中.
结论:
- 皮质面部运动区域表现出复杂的,时间动态编码的沟通手势.
- 并行处理流有助于产生社会适当的面部运动输出.
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