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I can answer historical or technical questions involving most Okinawan/Japanese styles of Karate and Kobujitsu. Also I have made a study of the acupoints and other pressure points and have researched the medical explanations of why they work the way they do. Ask me questions about the neurological implications of pressure point strikes. If I don`t know an answer I will gladly research it.

Experience in the area

I have 43 years experience in traditional Shito-Ryu Karate. I am currently Rokudan in Shito-Ryu and Sandan in Kobujitsu. I practice the Seito method of doing the Shito-Ryu kata. Also I study as often as possible with Seiyu Oyata, although this has not been as often as I would like. My research of pressure points caused me to study the peripheral nervous system, spinal laminae, corticothalamic network, reticular activating system and various links to other brain areas. I currently have 2 articles out on the subject.


Traditional Karate Association


AAS Microprecision Technology

Awards and Honors

Graduated Sigma AAS, Renshi grade TKA, Illinois state representative TKA.

What do you like about this subject?

It explains how many things work that were previously deemed to be unexplainable.

What do you still hope to achieve/learn in this field?

As much as I can retain. I hope to continue to uncover and illuminate the neurochemical mechanisms that are involved in triggering an unconscious state in response to impact.

Something interesting about this subject that others may not know:

The Thalamus acts as both filter and amplifier in different circumstances, responding to cortical messages marking specific areas of the body as either irrelevant or highly salient. The Thalamus then reduces what sensory information is relayed through to the cortex, and ultimately the conscious brain.

Something controversial or provocative about this subject

Strikes that cause a knock out generally cause a small degree of nerve tissue damage due to momentary drop of oxygenation of the brain. Over time, this effect is cumulative if many knock outs are performed and this can lead to serious consequences. In particular, the Reticular Activating System is involved and can be damaged. Such damage might trigger seizures, or worse.

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Julia02/29/12101010Wow - you answered so much more .....
Andy09/15/09101010Thank you very much for your advice .....

Recent Answers from Chris A. Johnston

2013-11-24 Grading:

Hello Josee,      Each instructor has their own method of teaching, each may bring a student along using their own method.  Although traditional styles such as Goju have well established criteria and generally

2012-02-27 Research for English Paper:

Hello Julia and Carol,     I have had a look at your list of questions and believe that I might answer them.  Be advised up front that some of the answers to these questions might vary based on the point

2011-11-10 Blocking:

Hello Ethan.       There are indeed several things that will help with this.  Initially simply drilling the blocking motions while imagining an incoming strike will help; later as more advanced kata are

2011-03-18 dit jow:

Hello Caleb,     Let me first say that I am not a Jow user myself and there are certainly others with a great deal more experience than I have.  But I did some research into this a few years ago and will

2010-12-27 skin:

Hello Caleb,     This is a commonly assumed bit of rumor, probably based on the fact that the presence of salt actively leaches water out of tissues.  The drying can make skin rougher, which can make it


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