Abstract:
:Primates are endowed with a brain about twice the size that of a mammal with the same body size, and humans have the largest brain relative to body size of all animals. This increase in brain size may be related to the acquisition of higher cognitive skills that permitted more complex social interactions, the evolution of culture, and the eventual ability to manipulate the environment. Nevertheless, in its internal structure, the primate brain shares a very conserved design with other mammals, being covered by a six-layered neocortex that, although expands disproportionately to other brain components, it does so following relatively well-defined allometric trends. Thus, the most fundamental events generating the basic design of the primate and human brain took place before the appearance of the first primate-like animal. Presumably, the earliest mammals already displayed a brain morphology radically different from that of their ancestors and that of their sister group, the reptiles, being characterized by the presence of an incipient neocortex that underwent an explosive growth in subsequent mammal evolution. In this chapter, we propose an integrative hypothesis for the origin of the mammalian neocortex, by considering the developmental modifications, functional networks, and ecological adaptations involved in the generation of this structure during the cretaceous period. Subsequently, the expansion of the primate brain is proposed to have relied on the amplification of the same, or very similar, developmental mechanisms as those involved in its primary origins, even in different ecological settings.
journal_name
Prog Brain Resjournal_title
Progress in brain researchauthors
Aboitiz F,Montiel JFdoi
10.1016/B978-0-444-53860-4.00001-5subject
Has Abstractpub_date
2012-01-01 00:00:00pages
3-24eissn
0079-6123issn
1875-7855pii
B978-0-444-53860-4.00001-5journal_volume
195pub_type
杂志文章,评审abstract::Children with epilepsy are known to have high rates of mental health problems. The role of seizures in the development of these problems is not known primarily because of difficulties in separating the effects of seizures from the three other potential causal factors: (a) poor child and family response to the conditio...
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journal_title:Progress in brain research
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更新日期:2011-01-01 00:00:00
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pub_type: 杂志文章,评审
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pub_type: 杂志文章,评审
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