enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Brain size - Wikipedia

    en.wikipedia.org/wiki/Brain_size

    The size of the brain is a frequent topic of study within the fields of anatomy, biological anthropology, animal science and evolution.Measuring brain size and cranial capacity is relevant both to humans and other animals, and can be done by weight or volume via MRI scans, by skull volume, or by neuroimaging intelligence testing.

  3. Encephalization quotient - Wikipedia

    en.wikipedia.org/wiki/Encephalization_quotient

    The concept of encephalization has been a key evolutionary trend throughout human evolution, and consequently an important area of study. Over the course of hominin evolution, brain size has seen an overall increase from 400 cm 3 to 1400 cm 3. [42] Furthermore, the genus Homo is specifically defined by a significant increase in brain size. [43]

  4. Evolution of the brain - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_the_brain

    The evolutionary history of the human brain shows primarily a gradually bigger brain relative to body size during the evolutionary path from early primates to hominins and finally to Homo sapiens. This trend that has led to the present day human brain size indicates that there has been a 2-3 factor increase in size over the past 3 million years ...

  5. Archaic humans - Wikipedia

    en.wikipedia.org/wiki/Archaic_humans

    The brain size of archaic humans expanded significantly from 900 cm 3 (55 cu in) in erectus to 1,300 cm 3 (79 cu in). Since the peak of human brain size during the archaics, it has begun to decline. Since the peak of human brain size during the archaics, it has begun to decline.

  6. Homo naledi - Wikipedia

    en.wikipedia.org/wiki/Homo_naledi

    They are estimated to have averaged 143.6 cm (4 ft 9 in) in height and 39.7 kg (88 lb) in weight, yielding a small relative brain size, encephalization quotient, of 4.5. H. naledi brain anatomy seems to have been similar to contemporary Homo, which could indicate comparable cognitive complexity. The persistence of small-brained humans for so ...

  7. Homo habilis - Wikipedia

    en.wikipedia.org/wiki/Homo_habilis

    It has generally been thought that brain size increased along the human line especially rapidly at the transition between species, with H. habilis brain size smaller than that of H. ergaster / H. erectus, jumping from about 600–650 cc (37–40 cu in) in H. habilis to about 900–1,000 cc (55–61 cu in) in H. ergaster and H. erectus.

  8. Human brain - Wikipedia

    en.wikipedia.org/wiki/Human_brain

    As a primate brain, the human brain has a much larger cerebral cortex, in proportion to body size, than most mammals, [259] and a highly developed visual system. [ 262 ] [ 263 ] As a hominid brain, the human brain is substantially enlarged even in comparison to the brain of a typical monkey.

  9. Brain–body mass ratio - Wikipedia

    en.wikipedia.org/wiki/Brain–body_mass_ratio

    Recent research indicates that, in non-human primates, whole brain size is a better measure of cognitive abilities than brain-to-body mass ratio. The total weight of the species is greater than the predicted sample only if the frontal lobe is adjusted for spatial relation. [ 19 ]