Introversion

The heart is an instrument that reads everything that happens around a person and delivers this information in the form of subtle feelings, so these feelings are fluctuating all the time and if we are not used to listen to the heart we might not be able to recognize them as anything else than attraction and repulsion, whereafter attraction is called love and repulsion changes to flight or anger with accusations and gets called fear, agression or ego.  Some hundreds of years ago they were called God and Devil.

To be able to identify only two dominating, opposite feelings can create a war between them. And then we have to chose and we start speaking intensively about love to push away the opposite force. But this tends to create movements that are similar to religious sekts, where people "believe in love" in the same way as they "believed in God" 150 years ago, now accusing others of having an ego or being driven by fear, when they need to have a principle to fight against.

But in both cases we are excluding all the variations that the heart is giving, if it just gets the chance to be heard. Greed, appetite and desire are in our culture also called "love" so for us it is not easy to know what the old Indian gurus were talking about, when we read the word "love". We don´t have a common language that can reflect variations. 

The guru and the shaman are the masters of interpreting the signals from the heart so they can distinguish between many different emotions and not only the usual instincts, which are not exactly the same as the subtle music in the heart, which is more like a flute playing melodies in the wind. That requires a training in the art of reading these electromagnetic fluctuations. When the shaman can do that he can also manipulate the mind of himself (and others), often with the help of his medicine items, which provide him with shortcuts by playing the right melodies. 

Anyway, if you are not used to interpret inner signals it can be difficult to be suddenly holding a Talking Stick with the demand to ”speak the truth”.
An extrovert person might just know that he is angry, because there is something in the outer world that irritates him, so he just wants to attack it and win the fight.

An introvert person might say that he doesn´t know, because he has to think about it first. He has to be alone and analyze it for a couple of days (or weeks) and then he might know.

Those famous negotiation experts, like William Ury and Marshall Rosenberg, who work with world leaders are probably mostly working with extrovert persons, who are not used to be introvert (thinking and analyzing their own feelings) and MR is then using the method of asking the person (who is supposed to be the one who should solve a big conflict in a country or a big company):

-”What is your need?” Often he has to ask several times before the other person understands the question.

So... how to do with the introspective one in a circle with a Talking Stick? Well, actually I don´t know, because an introvert person might not at all feel comfortable in such a circle. He might get blocked by the presence of other people and then just lose his energy in a way that it is not possible for him to make contact with his inner world. Five hours later, when he is alone, this information comes to him, but that is too late! The circle is over and the other people have gone home.
I believe that one option would be to tell this person in advance what the circle will be about so that he gets the time to figure out what he feels and thinks. Or to have a second circle the next day or next week, about the same issue. (But then all the extrovert people have already gone to another party?)

This is about getting or losing energy. The extrovert ones get energy from being in the circle while the introverts lose their energy. And if you lose energy you cannot think. And if you perceive and experience other people´s thoughts and feelings you no longer perceive your own ones. 

Animals get energy when they are in their own territory and usually they also lose energy when they are in someone else´s territory, so they avoid it. Maybe we can say that the outer world of external sensations is the territory of the extrovert person. He feels at home among a lot of people. 

So, what is the territory of the introvert person? His narrow little room? No, not at all. When he no longer gets disturbed by other people he can create his own space and when he restores energy he starts communicate! He talks with emotions, energies, frequencies, ideas, principles, memories, wind, water, the fire in the stove and spirits! When he is alone he can sail away to his territory of preference, so it is a kind of expansion and his task is to be able to chose the right spirit to communicate with and to sail away with! ("Shamanically speaking"!)