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321753 occurrences (No.65 in the rank) during 5 years in the PubMed. [no cache] 500 found

184) Uniformity, local variability, and systematic variation in neuron numbers per unit of cortical surface area across species and cortical areas have been claimed to characterize the isocortex.

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PMID:23960207 DOI:10.1093/cercor/bht214

2015 Cerebral cortex (New York, N.Y. : 1991)

* Systematic, cross-cortex variation in neuron numbers in rodents and primates.

- Uniformity, local variability, and systematic variation in neuron numbers per unit of cortical surface area across species and cortical areas have been claimed to characterize the isocortex. Resolving these claims has been difficult, because species, techniques, and cortical areas vary across studies. We present a stereological assessment of neuron numbers in layers II-IV and V-VI per unit of cortical surface area across the isocortex in rodents (hamster, Mesocricetus auratus; agouti, Dasyprocta azarae; paca, Cuniculus paca) and primates (owl monkey, Aotus trivigratus; tamarin, Saguinus midas; capuchin, Cebus apella); these chosen to vary systematically in cortical size. The contributions of species, cortical areas, and techniques (stereology, "isotropic fractionator") to neuron estimates were assessed. Neurons per unit of cortical surface area increase across the rostro-caudal (RC) axis in primates (varying by a factor of 1.64-2.13 across the rostral and caudal poles) but less in rodents (varying by a factor of 1.15-1.54). Layer II-IV neurons account for most of this variation. When integrated into the context of species variation, and this RC gradient in neuron numbers, conflicts between studies can be accounted for. The RC variation in isocortical neurons in adulthood mirrors the gradients in neurogenesis duration in development.

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(1)93 null	(11)7 but	(21)3 can	(31)2 for
(2)46 of	(12)7 with	(22)3 could	(32)2 found
(3)34 in	(13)6 identification	(23)3 differences	(33)2 generated
(4)31 and	(14)5 determination	(24)3 have	(34)2 identification,
(5)19 (ROS)	(15)5 that	(25)3 level	(35)2 including
(6)18 were	(16)4 as	(26)3 may	(36)2 phytotoxicity
(7)12 is	(17)4 or	(27)2 (ROS),	(37)2 rather
(8)10 are	(18)4 to	(28)2 (overall	(38)2 such
(9)9 from	(19)4 which	(29)2 M
(10)9 was	(20)3 AEJ-89	(30)2 along

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--- WordNet output for species --- =>人類, 種, 種類 Overview of noun species The noun species has 2 senses (first 2 from tagged texts) 1. (27) species -- ((biology) taxonomic group whose members can interbreed) 2. (5) species -- (a specific kind of something; "a species of molecule"; "a species of villainy") Overview of noun specie The noun specie has 1 sense (no senses from tagged texts) 1. coinage, mintage, specie, metal money -- (coins collectively) --- WordNet end ---