A proper evaluation requires measurements of a patient under at least two different conditions. The method used here is to examine a patient both at rest and during ANS activity. This can be accomplished by having a patient engage in some activity where the general response of a healthy person is known based on the patient's reaction, a more accurate assessment of the ANS is possible

A typical method to provoke an ANS reaction has been the use of beta-blockers or beta adrenergic agents.  Nerve-Express uses a more accessible method of ANS provocation - the Orthostatic Test, which is simply a transition from supine to standing position. Any dysfunction of the organism will be exhibited as an inadequate reaction of ANS response during this test.

Nerve-Express graphs the ANS state and its reaction using SNS and PSNS activities as the coordinate system. The final evaluation point is the centre between the points obtained on the SNS/PSNS coordinates (Fig. 4).

The general approach is to balance the ANS or restore it to homeostasis. However you can and should develop your own methods, based on the needs of specific cases. The Orthostatic Test takes approximately 7-9 minutes to administer.

The Rhythmographic Strip (Fig. 4) correlates to number 1-192 in the supine position and to 256-448 in the upright. The R-R intervals from 192-256 are dedicated to the transition between the supine and upright states.