Eupedia Forums
Site NavigationEupedia Top > Eupedia Forum & Japan Forum
Page 4 of 4 FirstFirst ... 234
Results 76 to 86 of 86

Thread: Brachycephaly

  1. #76
    Regular Member Achievements:
    1 year registered10000 Experience PointsThree Friends
    Johane Derite's Avatar
    Join Date
    21-06-17
    Posts
    918
    Points
    12,579
    Level
    33
    Points: 12,579, Level: 33
    Level completed: 90%, Points required for next Level: 71
    Overall activity: 0%

    Y-DNA haplogroup
    E-V13>Z5018>FGC33625
    MtDNA haplogroup
    U1a1a

    Country: Albania





    "The Evolution of Round Brains Ushered in the 'Human Revolution'"






    "In a study published Wednesday in Science Advances, researchers from the Max Planck Institute for Evolutionary Anthropology announced that the earliest Homo sapiens did not have globular brains like we have today. Instead, their brains had a shape intermediate between that of Homo erectus and that of the Neanderthals, both of which were somewhat more elongated horizontally. The brain, the authors write, gradually became globular over evolutionary time, and those changes in turn, induced neurological shifts that coincide with archaeological evidence of modern behavior."According to the new paper, the size of the early Homo sapiens brain entered the range of modern human brain size as early as 300,000 years ago, but its globular, round features emerged only 40,000 years ago. This unexpected revelation means that the brain reached its current shape much later than anticipated during evolution.
    To come to this conclusion, the team used tomographic scans and 3-D analysis to create virtual endocranial casts of 20 different Homo sapiens fossils. These fossils were divided into three groups: the oldest came from North and East Africa and represented the earliest known representatives of humans after the population split with Neanderthals, others lived in East Africa and the Eastern Mediterranean regions between 130,000 to 100,000 groups, and the final group lived between 35,000 to 10,000 years ago.
    They also created virtual endocasts — internal casts of the brain that approximate its size and morphology — of modern human samples to compare. Because brains are not preserved in the fossil record, the only direct evidence researchers have are from endocasts.

    LINK:
    https://www.inverse.com/article/4051...article-footer
    "As we have already stressed, the mass evacuation of the Albanians from their triangle is the only effective course we can take. In order to relocate a whole people, the first prerequisite is the creation of a suitable psychosis. This can be done in various ways." - Vaso Cubrilovic

  2. #77
    Elite member Achievements:
    Three FriendsVeteran25000 Experience Points

    Join Date
    25-10-11
    Location
    Brittany
    Age
    70
    Posts
    4,321
    Points
    35,088
    Level
    57
    Points: 35,088, Level: 57
    Level completed: 70%, Points required for next Level: 362
    Overall activity: 8.0%

    Y-DNA haplogroup
    R1b - L21/S145*
    MtDNA haplogroup
    H3c

    Ethnic group
    more celtic
    Country: France



    brzchycephaly

  3. #78
    Elite member Achievements:
    Three FriendsVeteran25000 Experience Points

    Join Date
    25-10-11
    Location
    Brittany
    Age
    70
    Posts
    4,321
    Points
    35,088
    Level
    57
    Points: 35,088, Level: 57
    Level completed: 70%, Points required for next Level: 362
    Overall activity: 8.0%

    Y-DNA haplogroup
    R1b - L21/S145*
    MtDNA haplogroup
    H3c

    Ethnic group
    more celtic
    Country: France



    brachycephaly and globularity seems

  4. #79
    Elite member Achievements:
    Three FriendsVeteran25000 Experience Points

    Join Date
    25-10-11
    Location
    Brittany
    Age
    70
    Posts
    4,321
    Points
    35,088
    Level
    57
    Points: 35,088, Level: 57
    Level completed: 70%, Points required for next Level: 362
    Overall activity: 8.0%

    Y-DNA haplogroup
    R1b - L21/S145*
    MtDNA haplogroup
    H3c

    Ethnic group
    more celtic
    Country: France



    brachycephaly and globularity seems associated but they are not identical - globularity, at first sight could favorize interconnectivity in brain but it is a picture, i don't know if it is reality - I suppose the frontal region development is of greater importance - that said, brachycephalic is only a two dimensions concept, and does not cover integraly globularity - Europeans became more and more brachycephalic since Antiquity and since hte 1900's the process reversed, so? Maybe we are becoming less intelligent? in fact opposite tendancies could be in play: social life and selection linked to it, but also mechanical constraints linked to overall stature - as often multifactors result

  5. #80
    Regular Member Achievements:
    1 year registered1000 Experience Points
    Mark's Avatar
    Join Date
    26-11-16
    Posts
    115
    Points
    1,106
    Level
    8
    Points: 1,106, Level: 8
    Level completed: 78%, Points required for next Level: 44
    Overall activity: 78.0%


    Ethnic group
    United Kingdom and Baltic
    Country: United States



    Quote Originally Posted by MOESAN View Post
    Maybe we are becoming less intelligent?
    This, basically.

  6. #81
    Regular Member Achievements:
    3 months registeredTagger Second Class500 Experience Points

    Join Date
    23-10-18
    Posts
    16
    Points
    595
    Level
    6
    Points: 595, Level: 6
    Level completed: 23%, Points required for next Level: 155
    Overall activity: 0%


    Country: Peru



    Quote Originally Posted by MOESAN View Post
    brachycephaly and globularity seems associated but they are not identical - globularity, at first sight could favorize interconnectivity in brain but it is a picture, i don't know if it is reality - I suppose the frontal region development is of greater importance - that said, brachycephalic is only a two dimensions concept, and does not cover integraly globularity - Europeans became more and more brachycephalic since Antiquity and since hte 1900's the process reversed, so? Maybe we are becoming less intelligent? in fact opposite tendancies could be in play: social life and selection linked to it, but also mechanical constraints linked to overall stature - as often multifactors result
    The intelligence-brachycephaly correlation you are implying is interesting.

  7. #82
    Dr. Eugenics Achievements:
    1 year registered1000 Experience Points
    ToBeOrNotToBe's Avatar
    Join Date
    31-12-16
    Posts
    1,116


    Ethnic group
    Of the world
    Country: United Kingdom



    Brachycephaly as a whole definitely does have a correlation with intelligence, it results in a larger proportion of the brain being part of the prefrontal cortex (but also a larger brain full-stop in most cases, as shortening and widening something that's long will always tend to increase its volume). I believe brain size has a definite correlation with IQ, which means brachycephaly does too.

    That being said, it probably isn't all about brain size, as if that's the case Cro-Magnons would be geniuses (when they for the most part got swarmed by farmers and wiped out by pastoralists)

  8. #83
    Regular Member Achievements:
    1 year registered1000 Experience Points

    Join Date
    15-12-17
    Posts
    69
    Points
    1,103
    Level
    8
    Points: 1,103, Level: 8
    Level completed: 77%, Points required for next Level: 47
    Overall activity: 4.0%


    Country: Italy





    One factor that contributed to brachycephalization is that the 150cc of brain matter lost since the neolithic revolution affected length more than breadth.

  9. #84
    Dr. Eugenics Achievements:
    1 year registered1000 Experience Points
    ToBeOrNotToBe's Avatar
    Join Date
    31-12-16
    Posts
    1,116


    Ethnic group
    Of the world
    Country: United Kingdom



    Quote Originally Posted by Saetrus View Post


    One factor that contributed to brachycephalization is that the 150cc of brain matter lost since the neolithic revolution affected length more than breadth.
    Firstly, this graph is terrible as it tries to portray humanity as homogenous, whereas you'd be stupid to think the brain size of Cro-Magnon has anything to do with modern-day Khoisan. But secondly, brachycephaly is not a Neolithic trait at all - Neolithic farmers were typically Mediterranean in phenotype (meaning long-headed and thin-faced). The loss in cranial volume since the Neolithic, then, would be primarily due to a reduction in facial width, which is what the archaeological record shows.

    Short-headedness only popped up recently, it's a relatively modern phenotype on the whole. Mixtures of Borreby types and Mediterranean types have been theorised to create Alpine types through a process of reduction, and this Alpine type has in turn been theorised to be the main agent of brachycephaly in Western Eurasia (creating phenotypes such as the extremely modern Dinarid, which combines a general East Mediterranean facial form with an Alpine short-headedness and wide forehead - to emphasise how modern this phenotype is, it actually postdates the beginning of copper smelting, which in the grand scheme of things is basically within recent memory).

    I would have thought, though, that the last 10,000 years would have been a period of great eugenics, which would perhaps mean these decreases in cranial volume have been accompanied by more efficient "wiring", so to speak.

  10. #85
    Elite member Achievements:
    Three FriendsVeteran25000 Experience Points

    Join Date
    25-10-11
    Location
    Brittany
    Age
    70
    Posts
    4,321
    Points
    35,088
    Level
    57
    Points: 35,088, Level: 57
    Level completed: 70%, Points required for next Level: 362
    Overall activity: 8.0%

    Y-DNA haplogroup
    R1b - L21/S145*
    MtDNA haplogroup
    H3c

    Ethnic group
    more celtic
    Country: France



    @ToBeOrNotToBe
    Interesting but very complicated question of intelligence and cerebral volume.
    But at first we have to look at the data:
    the brachycephally among the 'alpine' pops and 'dinaric' pops (to take modern pops) is not the same: in the alpine types, there is small loss of length and a good chunk of gain in breadth; among dinaric types (not the 'borreby'like ones), we have the opposite: important loss in length, small gain in breadth, so that 'dinaric' type has a seemingly smaller braincase spite its high stature; and in fact the frontal zone is not broad at all, comparatively!
    I agree with your last paragraph: there is size, and there is organisation.
    &: today, skulls seem decreasing among "evolved occidental" countries spite the increase in stature, but perhaps they are a bit higher? This last aspect (height) seems factual in USA (I lack any serious recent study, a study I red compared recent USA generations to the 19/begin.20 century ones, not the very recent evolution, say since the last world war)

  11. #86
    Regular Member Achievements:
    Veteran10000 Experience Points

    Join Date
    06-01-10
    Posts
    243
    Points
    13,916
    Level
    35
    Points: 13,916, Level: 35
    Level completed: 81%, Points required for next Level: 134
    Overall activity: 14.0%

    Y-DNA haplogroup
    Pre-Adam
    MtDNA haplogroup
    Pre-Eva

    Ethnic group
    Albanian - Dinaric
    Country: Montenegro



    0 out of 1 members found this post helpful.
    I2a2 is not dacian, it is sarmatian, you can find it in Slavic population and in Kurdistan. These criminals with I2a2 ydna came in Illyria in 7 century and made genocide against illyrian population, we must be happy they didn't eredicate us all. We were lucky cause Slavs were divided in nations, religions etc. If they were together there would be no Albanian today.

    Brachycephaly was created after mixing of neanderthals and sapiens, while browridge was removed, the rest of the head remains intact, so the length of head is shorter, there is brachycephaly.

Page 4 of 4 FirstFirst ... 234

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •