灵长类的底层前部机制需要人类的识别
Leonardo Ceravolo1,2, Coralie Debracque1,2, Eva Pool2,3
1Neuroscience of Emotions and Affective Dynamics lab, Department of Psychology and Educational Sciences, University of Geneva, Unimail building, Boulevard Pont-d'Arve 40CH-1205, Geneva, Switzerland.
Cerebral cortex communications
|November 29, 2023
概括
人类大脑处理灵长类的发声,揭示出明显的额叶机制. 这项研究突出了人类大脑如何进化以理解各种声音信号,包括来自其他物种的声音信号.
科学领域:
- 神经科学是一个神经科学.
- 灵长类动物学 灵长类动物学
- 进化生物学 进化生物学
- 生物声学是一种生物声学.
背景情况:
- 人类的口头语言处理是复杂的,涉及语义和情感发音与其他灵长类共享.
- 了解语音处理的神经基础是理解人类语言演变的关键.
研究的目的:
- 研究人类对灵长类动物发声的分类背后的行为和神经机制.
- 确定参与处理人类,大猿和子发声的脑部区域.
主要方法:
- 人类参与者在功能磁共振成像 (fMRI) 过程中对人类,黑猩猩,黑猩猩和 rhesus macaques 的发声进行了分类.
- 基于模型的fMRI分析使用逐个试验的准确物种分类的拟合概率.
- 控制了物种之间的声学变化.
主要成果:
- 参与者成功地分类了所有物种 (除了类动物) 的偶然之外的发音.
- 双边轨道前皮层和下额前环三角形 (IFGtri) 活动与分类准确性相关和反相关,分别.
- 与人类声音相比,观察到左侧IFGtri子区域的增强活动,用于准确地分类黑猩猩的呼叫.
结论:
- 不同的额叶机制参与处理灵长类动物的发声.
- 这些发现提供了关于人类大脑对声信号处理的进化发展的见解.
- 这项研究强调了灵长类通信频谱中对声调的特定物种神经反应.
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