Dolphin is widely renowned as one of the most intelligent creatures on earth, but are they really intelligent, at all?
The brain of a dolphin is much larger than other mammals and even human brains in terms of its size. The number of sulci and cerebral gyrus of the dolphin brain is staggering, which is amazed by scientists. Experts also announced that dolphins have a language similar to humans. As a result, the statement about the high IQ of dolphins has almost become absolute truth.
However, dolphins are particularly clearly inclined to automate the movement. Unlike terrestrial mammals, dolphins do not “think” and find new solutions when there is a sudden change in the external environment and living conditions. This seems a bit contradictory. The researchers did an experiment in which the steps were to "teach the dolphin some movements, then ask him to move the levers and other objects in the water, open the various small doors, do eight moves in a row, and walk out of a road." They observed that the dolphins soon found a solution. At the end of the first experiment, they completed the movement very accurately, without hesitation, without any mistakes, nor feeling tired.
But after finding the right way, they seem to have forgotten everything just now and repeat the original action immediately. Even if conditions change, they don't make any changes. It can be seen that the agile speed of dolphin learning movements exceeds that of monkeys, but their mobility ability to adapt to new situations is really poor. Their enthusiasm for exploration is only reflected in the first attempt.
Dolphins have a high degree of analysis and comprehensive ability, and even exceed the speed of processing and summarizing information. For example, the time they need to learn ten moves are almost the same with the time needed to learn one move. This is because the cerebral cortex of the dolphins is developed. However, the poor selection ability, the less flexible memory structure and the lack of enthusiasm for exploration all indicate that there are some special areas in the highly neurotic activity in dolphins.
The reason is the brain structure of the dolphins. The number of new cortex in the dolphin brain is large, while the old cortex and subcortical structures are small. In other words, he can learn some movements at high speed, but he can't store these actions. If this brain structure appears in deer's movements, they will also be as smart as dolphins. But for land animals, this is not a normal phenomenon.
Obviously, at some stage of evolution, mammals have used this brain structure to taste the difficulties in the struggle for survival and have to seek change. The only way to survive is to find an ecological environment that turns these shortcomings into advantages, or at least does not hinder survival. The reason why modern dolphins are still in this extreme state is that their ancestors successfully solved this problem. Because of the above "disadvantages", they helped them adapt to the underwater environment, successfully passed through millions of years.
- 原有 - yuán yǒu - existing
- 生存鬥爭 - shēngcún dòuzhēng - struggle for survival
- 妨礙 - fáng ài - hinder, obstruct
The photo is taken from here.