First, the degree of development is different: the human brain is characterized by a developed cerebral cortex, while the cerebral cortex of other animals is simple in development, and most of them only have physiological functions.
Second, the brain capacity is different:
1, human beings have the largest relative brain capacity, and the brain capacity of human brain is about three times that of chimpanzees. The human brain is not a simple enlargement of the chimpanzee brain, but has obvious differences in structure.
2. Compared with chimpanzee's brain, the brain is obviously enlarged in temporal lobe, parietal lobe and frontal lobe. The parietal lobe expands upward and backward, crowding and covering part of the occipital lobe, resulting in a rounder and fuller back of the head, and the temporal lobe develops upward to both sides, making the skull wider and taller. The parietal lobe and temporal lobe basically increase in the same proportion, but the biggest change is in the frontal lobe, not simply, but faster than other parts.
Third, the organizational forms are different.
Compared with animals, frontal lobe, inferior parietal lobe, temporoparietal occipital junction and temporal polar region are particularly developed, which can be seen not only from the bulge of brain nerve tissue in these parts of the skull, but also from the unusually thick corpus callosum connecting the neocortex of the two hemispheres.
Extended data:
Apart from the surface area of cerebral cortex and the ratio of brain weight to animal brain, the biggest difference between human brain and animal brain is that people have a second signal system, and the brain has a higher neural activity area stimulated by the second signal, which is the advanced intelligence of human beings and can not be reached by any animal.
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