Variability of size in brain (possibly only in forebrain)

Range ~15 - 20 % above and below the mean values
Organism Human Homo sapiens
Reference Haug H. Brain sizes, surfaces, and neuronal sizes of the cortex cerebri: a stereological investigation of man and his variability and a comparison with some mammals (primates, whales, marsupials, insectivores, and one elephant). Am J Anat. 1987 Oct180(2):126-42 DOI: 10.1002/aja.1001800203 p.127 right column top paragraphPubMed ID3673918
Primary Source Haug H. [Effect of secular acceleration on the human brain weight and its changes during aging]. Gegenbaurs Morphol Jahrb. 1984 130(4):481-500 [Article in German] AND Eggers R, Haug H, Fischer D. Preliminary report on macroscopic age changes in the human prosencephalon. A stereologic investigation. J Hirnforsch. 1984 25(2):129-39.PubMed ID6489725, 6736629
Comments P.127 left column bottom paragraph: "The material collected was fixed at different places in the world. Therefore the shrinkage of the single specimen is not reliably determined. According to [investigators’] experience, [they] must expect that the sizes estimated in a specimen may deviate from the actual size of the species investigated. The differences, however, are surely small, as shown by the estimation of the variance in man. The variability in man is about 15-20% above and below the mean values (primary sources). The differences between the animals of various families are in the magnitude of a power of four. Therefore, [they] feel that a comparison is allowable. This point will be discussed after the report of the results."
Entered by Uri M
ID 114631