File:Pnas.090504197.jpg: Difference between revisions

Latest revision as of 18:58, 11 March 2022

Summary

Importing file

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	18:58, 11 March 2022		1,800 × 1,459 (256 KB)	Maintenance script (talk \| contribs)	== Summary == Importing file

You cannot overwrite this file.

File usage

The following page uses this file:

Grey matter

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

JPEG file comment	Handmade Software, Inc. Image Alchemy v1.11

Revision as of 07:10, 7 January 2009 (view source) imported>Daniel Mietchen (Fig. 2 from {{CZ:Ref:DOI:Zhang 2000 A universal scaling law between gray matter and white matter of cerebral cortex}}: Cortical white and gray matter volumes of various species (n = 59) are related by a power law that spans five to six orders of magnitude. Most data points are based on measurement of a single adult animal. The line is the least squares fit, with a slope around 1.23 ± 0.01 (mean ± SD). The average and median deviations of the white matter volumes from the regression line are,...)		Latest revision as of 18:58, 11 March 2022 (view source) Maintenance script (talk \| contribs) (== Summary == Importing file) Tag: Server-side upload
(2 intermediate revisions by one other user not shown)
Line 1:		Line 1:
	~~Fig. 2 from {{CZ:Ref:DOI:Zhang 2000 A universal scaling law between gray matter and white matter of cerebral cortex}}:~~		== Summary ==
	~~Cortical white and gray matter volumes of various species (n~~ = 59) are related by a power law that spans five to six orders of magnitude. Most data points are based on measurement of a single adult animal. The line is the least squares fit, with a slope around 1.23 ± 0.01 (mean ± SD). The average and median deviations of the white matter volumes from the regression line are, respectively, 18% and 13% on a linear scale. Sources of data: If the same species appeared in more than one source below, the one mentioned earlier was used. All 38 species in table 2 in ref. 3 were taken, including 23 primates, 2 tree shrews, and 13 insectivores. Another 11 species were taken from table 2 in ref. 8, including 3 primates, 2 carnivores, 4 ungulates, and 2 rodents. Five additional species came from table 1 in ref. 11, including 1 elephant and 4 cetaceans. The data point for the mouse (G = ~~112 mm3 and W~~ = ~~13 mm3) was based on ref. 30, and that for the rat (G~~ = 425 mm3 and W = 59 mm3) was measured from the serial sections in a stereotaxic atlas (42). The estimates for the fisherman bat (Noctilio leporinus, G = 329 mm3 and W = 43 mm3) and the flying fox (Pteropus lylei, G = 2,083 mm3 and W = 341 mm3) were based on refs. 43 and 44, with the ratios of white and gray matters estimated roughly from the section photographs in the papers. The sea lion data (Zalophus californianus, G = 113,200 mm3 and W = 56,100 mm3) were measured from the serial sections at the website given in the legend to Fig. 1, with shrinkage correction.		Importing file