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1. chinaXiv:201707.00941 [pdf]

An ameghinornithid-like bird (Aves: Cariamae: Ameghinornithidae?) from the Middle Eocene of Nei Mongol, China

STIDHAM, Thomas A. ; WANG, Yuan-Qing
分类: 地球科学 >> 地质学

A new fossil specimen from the early Middle Eocene of an Irdin Manha Formation equivalent (Erden Obo Section) in Nei Mongol (Inner Mongolia), China appears to be derived from an ameghinornithid-like species, and may represent the frst record of the Ameghinornithidae in Asia. This new specimen exhibits the subcircular lateral condyle outline, the absence of an ossified supratendinal bridge, an enlarged flattened tubercle lateral to the extensor sulcus, and other features shared among known ameghinornithid and ameghinornithid-like birds. The Nei Mongol fossil is roughly contemporaneous with the oldest records of the ameghinornithids from Europe (~48 Ma). The absence of this group of birds from North America, and their occurrence in Europe and Asia during the Eocene contrasts with the contemporaneous Nei Mongol mammalian fauna that is comprised largely of Asian taxa with a few distinct linkages to North America. Along with the record of an ameghinornithid-like bird from the early Oligocene deposits of the Fayum area in Egypt, it seems that this extinct bird group had a much larger geographic distribution than previously recognized.

提交时间: 2017-07-31 来自合作期刊:《古脊椎动物学报》 点击量681下载量102 评论 0

2. chinaXiv:201706.00761 [pdf]

神经成像偏见及其心理机制

殷继兴; 胡传鹏; 彭凯平
分类: 心理学 >> 法制心理学

神经成像的结果是否能够作为科学证据被呈现在法庭之上是一个有争议的问题。先前的研究发现,神经成像结果的大脑图片可能会让人们过度地信任其所支持的结论,这种过度信任被称为神经成像偏见(neuroimage bias)。但是,后续的研究却要么未能重复出早期研究的结果,要么发现神经成像偏见仅在某些特定的条件下出现。对这些研究的分析表明,神经成像对人们态度和决策产生影响的心理机制并不在于大脑图像的生动性,而可能是受到神经成像结果的科学性以及其他中介变量的调节。未来的研究需要进一步考察神经成像偏见效应的可重复性及其跨文化的普适性。

提交时间: 2017-07-31 点击量1135下载量333 评论 0

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