Why modern people have smaller faces than ancient people?

2020-01-24 | FUN knowledge point original |

If you take the "ten thousand years" as the scale, what kind of changes have occurred to the human face? According to a comparative study of ancient and modern human skull shapes, especially facial skull shapes, scientists have found that human faces haveThe trend of becoming smaller, with obvious changes in width and length, not only promotes the human mind to be more flexible, the language ability is better, and even the expressions are much richer.

The most prominent feature of upright human skulls is that the brow bones are thick and the cheekbones are relatively high; the Neanderthals have longer heads and the brow bones are also more developed. Their skulls are from the length, the parietal,The occipital bone, brow bone, sacrum, mandible and other details are far from modern people.

Now we can make up to 20 different expressions on the face. Emotions such as laughter, scolding, and anger can be expressed by controlling the muscles of the face, but for ancient people such as uprights, Neanderthals, etc.Humans, their faces may not be as smart as we are.

Take brow bones and cheekbones as an example. The ancient man ’s brow bones were soaring and connected left and right, like a large eave crosses under his forehead and his eyes straight up, raising eyebrows and frowning becomes difficult to achieve.Emotions, doubts, and other emotions need to be communicated through other methods; the same is true for the cheekbones. Our cheekbones not only become smaller but also tend to become narrower, which makes it easier to smile without appearing stiff.

The causes of human facial morphological changes are various, which are the result of biomechanics, physiology, and adaptation to the environment. Especially in the past 100,000 years, with climate change, the human diet has also changed greatly. Originally, it was necessary to rely on molars to chew continuously.In order to break down large pieces of food, cooked food greatly shortens the chewing time. Human molars are no longer overdeveloped, and smaller molars mean smaller jaws and faces. When hunting and gathering are gradually replaced by planting agriculture, the face becomes smaller.More and more obvious.

The change of face shape also promotes communication between people. Expressions are an important communication channel to assist language communication, which can make people carry out in-depth emotional communication.

The reduction in face shape is a result of long-term evolution, and it is also the difference between Homo sapiens, Homo erectus, Neanderthals, etc. Of course, while the overall human face shape has become smaller, the population in different regions has also evolved its face shape in the long termTheir respective characteristics, especially in terms of width and length, Asian faces are often relatively wide and flat, and European and African faces are relatively narrow and three-dimensional. In fact, the face shape is still in dynamic changes today.With changes in diet, environment, and climate, the shape of the face will continue to change.

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