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Birds have primate-like numbers of neurons in the forebrain

Proceedings of the National Academy of Sciences - PNAS, 2016-06, Vol.113 (26), p.7255-7260 [Tạp chí có phản biện]

Volumes 1–89 and 106–113, copyright as a collective work only; author(s) retains copyright to individual articles ;Copyright National Academy of Sciences Jun 28, 2016 ;ISSN: 0027-8424 ;EISSN: 1091-6490 ;DOI: 10.1073/pnas.1517131113 ;PMID: 27298365

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  • Nhan đề:
    Birds have primate-like numbers of neurons in the forebrain
  • Tác giả: Olkowicz, Seweryn ; Kocourek, Martin ; Lučan, Radek K. ; Porteš, Michal ; Fitch, W. Tecumseh ; Herculano-Houzel, Suzana ; Němec, Pavel
  • Chủ đề: Animals ; Asian students ; Biological Sciences ; Birds ; Brain ; Brain - cytology ; Cell Count ; Female ; Genetics ; Genotype & phenotype ; Male ; Medical imaging ; Neurons ; Primates ; Second language learning
  • Là 1 phần của: Proceedings of the National Academy of Sciences - PNAS, 2016-06, Vol.113 (26), p.7255-7260
  • Mô tả: Some birds achieve primate-like levels of cognition, even though their brains tend to be much smaller in absolute size. This poses a fundamental problem in comparative and computational neuroscience, because small brains are expected to have a lower information-processing capacity. Using the isotropic fractionator to determine numbers of neurons in specific brain regions, here we show that the brains of parrots and songbirds contain on average twice as many neurons as primate brains of the same mass, indicating that avian brains have higher neuron packing densities than mammalian brains. Additionally, corvids and parrots have much higher proportions of brain neurons located in the pallial telencephalon compared with primates or other mammals and birds. Thus, large-brained parrots and corvids have forebrain neuron counts equal to or greater than primates with much larger brains. We suggest that the large numbers of neurons concentrated in high densities in the telencephalon substantially contribute to the neural basis of avian intelligence.
  • Nơi xuất bản: United States: National Academy of Sciences
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0027-8424
    EISSN: 1091-6490
    DOI: 10.1073/pnas.1517131113
    PMID: 27298365
  • Nguồn: GFMER Free Medical Journals
    MEDLINE
    PubMed Central
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