WASHINGTON (Reuters) - Early human ancestors like Lucy were less intelligent than today's great apes - chimpanzees, gorillas and orangutan monkeys, according to the German site Duchi Villa and Lucy is the common name for a female skeleton fossil that lived 3.2 million years ago. It was found in Ethiopia in 1974, and scientists believe it had a relatively small brain compared to humans in modern times.

The London Journal of Royal Society Chronicle reported that researchers had previously assumed that Lucy had similar intelligence to the great apes, based on the fact that they all had similar brains. The researchers found, however, that the rate of blood flow was slower in Lucy's brains and peers than in modern-day apes, but the small openings in the skull arteries would have allowed the blood flow to double in the brain. It is known that blood flow rates to the brain refer to both the brain's metabolic rate and the level of intelligence of the organism, according to researchers, the results suggest that intelligence develops much faster in modern human races, and this is probably associated with increased complexities in social life. .

The researchers found that modern gorillas have twice the rate of blood flow that passes through these blood channels than in Australopithecus, although all have similar-sized brains.

The team reported that smaller monkeys such as chimpanzees and orangutan monkeys had higher blood flow rates to their brains than Australopithecus, which made scientists believe that Lucy was less intelligent than current chimpanzees as well as gorillas and orangutans.