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000009384 0247_ $$2DOI$$a10.1016/j.jhevol.2009.11.011
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000009384 084__ $$2WoS$$aAnthropology
000009384 084__ $$2WoS$$aEvolutionary Biology
000009384 1001_ $$0P:(DE-HGF)0$$ade Sousa, A.A.$$b0
000009384 245__ $$aHominoid visual brain structure volumes and the position of the lunate sulcus
000009384 260__ $$aAmsterdam [u.a.]$$bElsevier$$c2010
000009384 300__ $$a281 - 292
000009384 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000009384 440_0 $$09907$$aJournal of Human Evolution$$v58$$x0047-2484$$y4
000009384 500__ $$aWe are grateful to Drs. Bernard Wood, Ralph Holloway, Peter Lucas, and Brian Richmond for comments on earlier versions of the manuscript. Dr. Katerina Semendeferi was instrumental in establishing the Zilles ape brain collection used in this study. Dr. Joseph Erwin facilitated access to great ape brain specimens. The Yerkes Primate Center also provided brains. This work was supported by the National Science Foundation (BCS-9987590, BCS-0453005, BCS-0515484, BCS-0549117, BCS-0827531, DGE-0801634), the Fundacao para a Ciencia e a Tecnologia (SFRH/BPD/43518/2008), the National Institutes of Health (NS42867), the Wenner-Gren Foundation for Anthropological Research, and the James S. McDonnell Foundation (22002078).
000009384 520__ $$aIt has been argued that changes in the relative sizes of visual system structures predated an increase in brain size and provide evidence of brain reorganization in hominins. However, data about the volume and anatomical limits of visual brain structures in the extant taxa phylogenetically closest to humans-the apes-remain scarce, thus complicating tests of hypotheses about evolutionary changes. Here, we analyze new volumetric data for the primary visual cortex and the lateral geniculate nucleus to determine whether or not the human brain departs from allometrically-expected patterns of brain organization. Primary visual cortex volumes were compared to lunate sulcus position in apes to investigate whether or not inferences about brain reorganization made from fossil hominin endocasts are reliable in this context. In contrast to previous studies, in which all species were relatively poorly sampled, the current study attempted to evaluate the degree of intraspecific variability by including numerous hominoid individuals (particularly Pan troglodytes and Homo sapiens). In addition, we present and compare volumetric data from three new hominoid species-Pan paniscus, Pongo pygmaeus, and Symphalangus syndactylus. These new data demonstrate that hominoid visual brain structure volumes vary more than previously appreciated. In addition, humans have relatively reduced primary visual cortex and lateral geniculate nucleus volumes as compared to allometric predictions from other hominoids. These results suggest that inferences about the position of the lunate sulcus on fossil endocasts may provide information about brain organization.
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000009384 65320 $$2Author$$aAllometry
000009384 65320 $$2Author$$aEvolution
000009384 65320 $$2Author$$aHominoids
000009384 65320 $$2Author$$aLateral geniculate nucleus
000009384 65320 $$2Author$$aLunate sulcus
000009384 65320 $$2Author$$aPrimary visual cortex
000009384 650_2 $$2MeSH$$aAnimals
000009384 650_2 $$2MeSH$$aBiological Evolution
000009384 650_2 $$2MeSH$$aFossils
000009384 650_2 $$2MeSH$$aGeniculate Bodies: anatomy & histology
000009384 650_2 $$2MeSH$$aHominidae: anatomy & histology
000009384 650_2 $$2MeSH$$aHumans
000009384 650_2 $$2MeSH$$aHylobates: anatomy & histology
000009384 650_2 $$2MeSH$$aMacaca fascicularis: anatomy & histology
000009384 650_2 $$2MeSH$$aMagnetic Resonance Imaging
000009384 650_2 $$2MeSH$$aOrgan Size
000009384 650_2 $$2MeSH$$aPan paniscus: anatomy & histology
000009384 650_2 $$2MeSH$$aPan troglodytes: anatomy & histology
000009384 650_2 $$2MeSH$$aPongo pygmaeus: anatomy & histology
000009384 650_2 $$2MeSH$$aVisual Cortex: anatomy & histology
000009384 650_7 $$2WoSType$$aJ
000009384 7001_ $$0P:(DE-HGF)0$$aSherwood, C.C.$$b1
000009384 7001_ $$0P:(DE-Juel1)VDB1083$$aMohlberg, H.$$b2$$uFZJ
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000009384 7001_ $$0P:(DE-HGF)0$$aSchleicher, A.$$b4
000009384 7001_ $$0P:(DE-HGF)0$$aMacLeod, C.E.$$b5
000009384 7001_ $$0P:(DE-HGF)0$$aHof, P.R.$$b6
000009384 7001_ $$0P:(DE-HGF)0$$aFrahm, H.$$b7
000009384 7001_ $$0P:(DE-Juel1)131714$$aZilles, K.$$b8$$uFZJ
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