1982 年 75 巻 2special 号 p. 751-755
In ancient India, Ki was considered Vayu, that was a strong corpuscle. In China, Ki was the source of energy. In our country, Ki was estimated to be spirit, mind, or electric energy. I consider that Ki is the action current, and is related to the blood circulation and autonomous nervous system.
Ki is moving but invisible. It exists only in the living body, not in the dead body. The blood cells move only in the living body, but stop in the dead body. The blood circulation in the body is controlled by the autonomous nervous system. Therefore I hypothesize Ki as the action current moving through the autonomous nervous system.