Recent research shows people living in polar regions has the eyeballs and a larger brain.
Increase the size of the brain and eye allows a person to see better than those who lived on the equator.
Increase the size of the brain and eye allows a person to see better than those who lived on the equator.
"Someone who lives in the polar regions will have the eyeball 20 percent greater than those living in the equator," Head of the Institute of Cognitive & Evolutionary Anthropology at Oxford University, Robin Dunbar pages as reported by Discovery News.
"People who live at high latitudes have a higher visual activity of the living around the equator, "added Dunbar.
"Essentially, they have a better vision to overcome the lack of lighting levels in areas of high latitudes."
For the study, Dunbar and colleagues, examined the Eiluned Pearce 55 individuals from 12 different populations.
The study focused on volume and cranial capacity. Individuals who studied the people living on 200 years ago and the skull into the Oxford University Museum collection.
The study found a significant relationship between latitude with a brain. The lowest brain possessed by many types of Micronesia who live around the equator with a weight of 40.6 ounces of brain.
While larger brains have a lot of Scandinavian type of living around the pole with a weight of 50.2 ounces.
Skull citizen residents of the North Pole not included, but researchers made estimates 20 percent larger based on the data they have.
However, the researchers quickly say this is not related to brain volume and intelligence.
"Essentially, we mean people have larger brains in people who live in high latitudes, does not mean they are smarter. It just means they have an increased volume of the brain used for vision and this has increased the size of the brain as a whole," said Pearce . eyeballs bigger allow images to fall into the photoreceptor is smaller making it more clear to distinguish. The amount of lighting on the earth decreases with increasing latitude. Thus, people who live in high-latitude areas need to improve eyesight.
source : http://www.apakabardunia.com/2011/07/manusia-penghuni-kutub-punya-otak-dan.html
