Amiez Céline, Sallet Jérôme, Novek Jennifer, Hadj-Bouziane Fadila, Giacometti Camille, Andersson Jesper, Hopkins William D, Petrides Michael
Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500, Bron, France.
Wellcome Integrative Neuroimaging Centre, Department of Experimental Psychology, University of Oxford, Oxford, OX1 3SR, UK.
Commun Biol. 2021 Jan 8;4(1):54. doi: 10.1038/s42003-020-01571-3.
The paracingulate sulcus -PCGS- has been considered for a long time to be specific to the human brain. Its presence/absence has been discussed in relation to interindividual variability of personality traits and cognitive abilities. Recently, a putative PCGS has been observed in chimpanzee brains. To demonstrate that this newly discovered sulcus is the homologue of the PCGS in the human brain, we analyzed cytoarchitectonic and resting-state functional magnetic resonance imaging data in chimpanzee brains which did or did not display a PCGS. The results show that the organization of the mid-cingulate cortex of the chimpanzee brain is comparable to that of the human brain, both cytoarchitectonically and in terms of functional connectivity with the lateral frontal cortex. These results demonstrate that the PCGS is not human-specific but is a shared feature of the primate brain since at least the last common ancestor to humans and great apes ~6 mya.
扣带旁沟（PCGS）长期以来一直被认为是人类大脑特有的结构。其有无与个体间人格特质和认知能力的差异有关。最近，在黑猩猩大脑中观察到了一条假定的PCGS。为了证明这条新发现的脑沟是人类大脑中PCGS的同源物，我们分析了有或没有显示PCGS的黑猩猩大脑的细胞构筑和静息态功能磁共振成像数据。结果表明，黑猩猩大脑扣带中部皮质的组织结构在细胞构筑以及与外侧额叶皮质的功能连接方面与人类大脑相当。这些结果表明，PCGS并非人类所特有，而是至少自约600万年前人类和大猩猩的最后一个共同祖先以来，灵长类大脑的一个共同特征。
