Most of you must have seen F.R.I.E.N.D.S. There is a particular episode named;
"The One With Unagi" where Ross Geller explains to Rachel and Phoebe the concept of a remaining mind. However it is not called Unagi. Rather, it is termed as Zanshin.
Zanshin (Japanese: 残心) is a state of awareness, of relaxed alertness, in Japanese martial arts. A literal translation of Zanshin is "remaining mind". In several martial arts, Zanshin refers more narrowly to the body's posture after a technique is executed.
Here is a logo-esque model of the same. SVG was generated from a contribution from Moyashi Arts on Deviant Arts