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最近,美国科学家通过分析多种古代人类化石,测定不同人种的大脑体积与身体重量的变化情况,否定了以往所谓人类进化从大脑不大、个头矮小向身材高大、思维发达直线演变的推断。大脑科学家的研究表明,人类大脑体积在相当长时期里没有发生什么变化。约1800万年至60万年前,人类祖先的进化处在稳定时期。而在60万至15万年前,人的大脑变化较大,头盖骨体积扩大非常快,这种趋势一直延续到7.5万前,此时人的头盖骨体积达1440立方厘米;此后大脑体积的增长处于相
Recently, by analyzing a variety of ancient human fossils, the United States scientists determined the changes in the brain volume and body weight of different ethnic groups and denied the inference that the so-called human evolution had evolved from a small brain to a tall, short, tall, and thought-developed one. Research by brain scientists has shown that there is no change in the size of the human brain for quite some time. About 18 million to 600,000 years ago, the evolution of human ancestry was at a stable period. In the 600,000 to 150,000 years ago, the human brain varied greatly and the skull volume expanded very fast. This trend continued until 75,000. At this time, the human skull volume reached 1440 cubic centimeters. After that, the brain volume increased phase