Acupuncture Evaluation By Marvin C. Cain D.V.M.
Master Acupuncturist, Lecturer, Author
"In evaluation of the precise construction of this devise, I found that a plastic tubing protecting the gum and head areas, totally atraumatic, applied pressure on the acupuncture
points, G.V.26 and T.H.17.
G.V.17 (Located on the upper gum between the two front teeth and under the upper lip) is an adrenaline release point when stimulated, but constant pressure or over stimulation creates a blockage and subsequent sedative effect. The plastic colored head band with 'knobs' that fall under the ear on both sides are addressing T.H.17 which is a tranquilizing point when stimulated causing endorphin release which has a sedative or soporific action. This is not unlike rubbing a dog or cat behind and under the ear which produces a state of euphoria. The 'pull and release' action provides a stimulative action on this point, and subsequently desired effect.
While the desired 'restraint' is accomplished, the horse is subject to 'pleasure' rather than 'pain', the most amazing things are that once the initial 'desensitization' is done it remains. It's not like Ace promozine, Torbugisec, Rompun, etc. that wears off and in the process leaving no memory. This enables the operator to conduct procedures in an acceptable state to the horse without creating bad cellular memories when the procedure need be done again, and allows the horse to remember whatever procedure or training task was performed with a pleasurable association."
protecting the gum and head areas, totally atraumatic, applied pressure on the acupuncture 
'pain', the most amazing things are that once the initial 'desensitization' is done it remains. It's not like Ace promozine, Torbugisec, Rompun, etc. that wears off and in the process leaving no memory. This enables the operator to conduct procedures in an acceptable state to the horse without creating bad cellular memories when the procedure need be done again, and allows the horse to remember whatever procedure or training task was performed with a pleasurable association."