Socially tuned: Brain responses differentiating human and animal motion
Socially tuned: Brain responses differentiating human and animal motion
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DOI：
10.1080/17470919.2011.614003
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发表时间：
2012-01-01
影响因子：
2
通讯作者：
Pelphrey, Kevin A.
中科院分区：
文献类型：
--
作者：
Kaiser, Martha D.;Shiffrar, Maggie;Pelphrey, Kevin A.
与动物运动相比，典型的成年观察者对人类运动表现出更强的行为敏感性。然而，这种效应的神经基础尚不清楚。我们通过比较对人类和非人类生物运动的神经反应，研究了对生物运动感知的大脑机制对这类运动的社会相关性的调节。特别地，我们测试了右侧后颞上沟（pSTS）的反应根据运动的社会相关性而变化的假设，对那些具有最大社会相关性的生物运动（人类b>狗）的反应最强烈。在功能性磁共振成像（fMRI）过程中，典型的成年人观看了由动作捕捉数据生成的人类、狗和拖拉机运动的真实点光显示。结合分析确定了在生物运动感知过程中相对于物体运动的显著激活区域。在这些区域中，只有一个大脑区域，即右侧pSTS，显示出相对于狗的运动对人类运动的反应增强。这一发现表明，pSTS反应是敏感的社会相关性的生物运动刺激。
Typical adult observers demonstrate enhanced behavioral sensitivity to human movement compared to animal movement. Yet, the neural underpinnings of this effect are unknown. We examined the tuning of brain mechanisms for the perception of biological motion to the social relevance of this category of motion by comparing neural response to human and non-human biological motion. In particular, we tested the hypothesis that the response of the right posterior superior temporal sulcus (pSTS) varies according to the social relevance of the motion, responding most strongly to those biological motions with the greatest social relevance (human > dog). During a functional magnetic resonance imaging (fMRI) session, typical adults viewed veridical point-light displays of human, dog, and tractor motions created from motion capture data. A conjunction analysis identified regions of significant activation during biological motion perception relative to object motion. Within each of these regions, only one brain area, the right pSTS, revealed an enhanced response to human motion relative to dog motion. This finding demonstrates that the pSTS response is sensitive to the social relevance of a biological motion stimulus.