Light power influences the human brain to grow

Light power influences the human brain to grow
It is reported according to the scientific association for promotion (AAAS) of U.S.A. Websites report on July 26, the latest science discovers, have greater differences to live in the head size of the person of different latitude, and the person living near the polar region of the earth has the biggest head.

For a long time, compare the equator area of the earth, daytime in the earth polar region is shorter and shorter, darker and darker, so live in the intersection of the earth and the very north until people of southern areas look, evolve a lot of speciality of owl most. Researcher's detection through 55 heads of the 19th century that found to all parts of the world and than to finding, live in tropical people of area than live in high latitude and the intersection of low latitudes and people of district, have smaller eyes. Because big eyes can absorb more light, the people close to the polar region are weak because of the light, eyes are all bigger.

Study to further prove, look with relatively person of low latitudes that can be under light weaker situation higher, clearly see with tropical regional people under the strong situation of light equally. And people's brain quantity, with the increase and reducing several ml differences of the height above sea level. Researchers think, perhaps exactly change the great result that causes because the visual centre of the brain because spies on the tape becomes wide.

This achievement is published on " imperial family's social communique B roll ". (field discipline)

Light power influences the human brain to grow