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Modeling the evolution of cortico-cerebellar systems in primates

Smaers, JB; Steele, J; Zilles, K; (2011) Modeling the evolution of cortico-cerebellar systems in primates. NEW PERSPECTIVES ON NEUROBEHAVIORAL EVOLUTION , 1225 176 - 190. 10.1111/j.1749-6632.2011.06003.x.

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Abstract

Although it is commonly accepted that brains work as functionally distributed systems in which interconnected structures work together in processing particular types of information, few studies have investigated the evolution of functionally specialized neural systems across many different lineages. MR-related research has provided in-depth information on connectivity patterns, but because of its focus on particular species, it has given only indicative clues about evolutionary patterns shaping brain organization across primates. Here, we combine depth with breadth of analysis by investigating patterns of covarying size evolution in substructures of the cortico-cerebellar system across 19 anthropoid species spanning 35 million years of divergent evolution. Results demonstrate two distinct patterns of size covariation in substructures of the cortico-cerebellar system, suggesting neural systems involving profuse cortico-cerebellar connections are a major factor in explaining the evolution of anthropoid brain organization. We set out an evolutionary model of relative cortico-cerebellar expansion and provide a detailed picture of its branch-specific evolutionary history suggesting the ape radiation is the clade with the strongest and most consistent evolutionary history in relative (frontal) cortico-cerebellar expansion.

Type: Article
Title: Modeling the evolution of cortico-cerebellar systems in primates
Location: Armed Forces Inst Pathol, Washington, DC
DOI: 10.1111/j.1749-6632.2011.06003.x
Keywords: cortico-cerebellar system, allometry, brain evolution, primates, TOOL USE, NEOCORTEX SIZE, BRAIN STRUCTURE, BASAL-GANGLIA, CORRELATED EVOLUTION, PREFRONTAL CORTEX, SOCIAL BRAIN, MOTOR AREAS, GREAT APES, CHIMPANZEES
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of SandHS > Dept of Anthropology
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of SandHS > Institute of Archaeology
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of SandHS > Institute of Archaeology > Institute of Archaeology Gordon Square
URI: http://discovery.ucl.ac.uk/id/eprint/1310459
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