The 3 Centres
In the Enneagram system of thought, we each have three Energy Centres available to us: Instinctual, Feeling and Thinking. This division corresponds to the three unique functions of our brain, which integrates, at a fundamental level, three elements functioning in different ways.
Each of us possesses the three forms of energy, the 3 Centres, but we don't use them in the same way. One of our Centres is described as Dominant, because this is the one we know best. Then there is our Second Centre, and then the last one that is termed Repressed, because it is not easily accessible to us.