One of the main concepts in Bernstein's theories is co-ordination. Co-ordination is the mechanism by which each mechanism of the body cooperates to create one movement. *1

First, Bernstein discovered that the body of an animal has too much freedom. When generating motion, it is necessary to instead limit its freedom. Thus, the generation of movement requires some kind of tension, which loses freedom and leads the body to one movement.

Moreover, this prompts the movements of each part of the body. And the previous four levels create one movement, complementing each other. This cooperative mechanism is called "Co-ordination." *2

■References (Books, papers, Web articles, etc.)
Dexterity and Its Development (Resources for Ecological Psychology)   Nicholai A. Bernstein  Routledge; 1 edition (November 26, 2015)
人工知能のための哲学塾』  第五夜・第四三章 人工知能に運動感覚を与える 三宅 陽一郎 二〇一六年
人工知能のための哲学塾 第五回 「メルロ=ポンティの知覚論」資料

*1: Co-ordination is to overcome the excessively high degree of freedom of motor organs, that is, to convert motor organs into a controllable system. (Quoted from Dexterity and Its Development by Bernstein) *2: For example, a car has four tires. If the car is designed to control four tires separately, nobody can drive safely. But generally speaking, the freedom of operation is limited by connecting four tires. When generating motion, it is necessary to restrict freedom. [Editorial department]

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References list of "AI meets Philosophy: how to design the Game AI"