The short answer is yes. SNS can have increased local activity. i.e. heart, muscle activity (forearm) . For humans it can be measured by either catheterisation or radioisotope dilution. For animals neurographic measurements are also possible.
Sympathetic and Parasympathetic activities of ANS are activated all the time of the life, and have variations based on external (or just perceived) stimuli. Otherwise humans (and animals) would not be able to adapt to their environment. This is also called ANS regulation loop and breathing is a major part of this loop. An example of such ANS regulation is shown on the attached meditation experiment. You can see that even at rest, ANS is modulating continuously and perceived emotion is a big part of ANS balance (or imbalance).
i am looking for sympathetic activity in the AVA organ as it might show itself by the small temperature fluctuations, see in the fingers together with the much larger fluctuations due to the sympathetic thermoregulatory influence on the AVA flow ( only seen in warm subjects).
Yes, i am looking for sympathetic activity in the AVA organ as it might show itself by the small temperature fluctuations, see in the fingers together with the much larger fluctuations due to the sympathetic thermoregulatory influence on the AVA flow ( only seen in warm subjects).