Cellular Scaling Rules for the Brains of Marsupials: Not as “Primitive” as Expected
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چکیده
منابع مشابه
Cellular Scaling Rules for the Brains of Marsupials: Not as "Primitive" as Expected.
In the effort to understand the evolution of mammalian brains, we have found that common relationships between brain structure mass and numbers of nonneuronal (glial and vascular) cells apply across eutherian mammals, but brain structure mass scales differently with numbers of neurons across structures and across primate and nonprimate clades. This suggests that the ancestral scaling rules for ...
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How do cell number and size determine brain size? Here, we show that, in the order Rodentia, increased size of the cerebral cortex, cerebellum, and remaining areas across six species is achieved through greater numbers of neurons of larger size, and much greater numbers of nonneuronal cells of roughly invariant size, such that the ratio between total neuronal and nonneuronal mass remains consta...
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Primates are usually found to have richer behavioral repertoires and better cognitive abilities than rodents of similar brain size. This finding raises the possibility that primate brains differ from rodent brains in their cellular composition. Here we examine the cellular scaling rules for primate brains and show that brain size increases approximately isometrically as a function of cell numbe...
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Insectivores represent extremes in mammalian body size and brain size, retaining various "primitive" morphological characteristics, and some species of Insectivora are thought to share similarities with small-bodied ancestral eutherians. This raises the possibility that insectivore brains differ from other taxa, including rodents and primates, in cellular scaling properties. Here we examine the...
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ژورنال
عنوان ژورنال: Brain, Behavior and Evolution
سال: 2017
ISSN: 0006-8977,1421-9743
DOI: 10.1159/000452856