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Comment
. 2013 Sep 24;110(39):E3682.
doi: 10.1073/pnas.1308850110. Epub 2013 Sep 12.

How humans stand out in frontal lobe scaling

Jeroen B Smaers  1
Affiliations
Comment

How humans stand out in frontal lobe scaling

Jeroen B Smaers. Proc Natl Acad Sci U S A. .
No abstract available

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Conflict of interest statement

The author declares no conflict of interest.

Figures

Fig. 1.
Fig. 1.
The 95% confidence intervals of phylogenetic generalized least-squares regressions (cf. 1). Thick lines indicate nonhuman allometry, thin lines nonape allometry. (A) Human left prefrontal white relative to gray matter is shown to be larger than expected; B and C show this is not explained by smaller than expected nonprefrontal white matter or left prefrontal gray matter (contrary to ref. 1). Data are available from the departmental Web site of J.B.S. (http://www.stonybrook.edu/anthro/staff/jsmaers.shtml) or on request. White circles indicate human, gray indicate ape, black indicate monkey values.
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References

    1. Barton RA, Venditti C. Human frontal lobes are not relatively large. Proc Natl Acad Sci USA. 2013;110(22):9001–9006. - PMC - PubMed
    1. Bush EC, Allman JM. The scaling of frontal cortex in primates and carnivores. Proc Natl Acad Sci USA. 2004;101(11):3962–3966. - PMC - PubMed
    1. Smaers JB, et al. Primate prefrontal cortex evolution: Human brains are the extreme of a lateralized ape trend. Brain Behav Evol. 2011;77(2):67–78. - PubMed
    1. Sherwood CC, Holloway RL, Semendeferi K, Hof PR. Is prefrontal white matter enlargement a human evolutionary specialization? Nat Neurosci. 2005;8(5):537–538, author reply 538. - PubMed
    1. Smaers JB, Soligo C. Brain reorganization, not relative brain size, primarily characterizes anthropoid brain evolution. Proc Biol Sci. 2013;280(1759):20130269. - PMC - PubMed

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