There are some important things to understand about centers before discussing each one in turn. The first is that all centers (of which we will primarily discuss the main four: Intellectual, Moving, Instinctive, and Emotional) are made up three more divisions. Those are Intellectual, Moving, and Emotional. What this means is that there is an Intellectual part of the Moving center, an Emotional part of the Intellectual center, etc.
Each of these divisions can be seen in the way that one accesses the center. If one is mechanically accessing a center, they are using the Moving part of the center. And while it has been discussed that mechanical living can be harmful, this is primarily in regards to mechanical thinking and emotions. Certain things in a person are intended to be mechanical, and could not or should not be conscious, such as breathing and the inner workings of the body. As for the centers, an example of the Moving part of an Intellectual center is memory or logical problem solving; it is automatic and does not need conscious decisions to be made in order for it to work. Or the Moving part of the Moving center would simply be walking or eating or any physical activity to which we normally are not putting any attention into.
The next division is the Intellectual division. Each center has an Intellectual part of it that is accessed by conscious attention. The Intellectual part of the Moving center is responsible for learning new movements as attention is required to memorize the steps, and then this is eventually taken over by the Moving section of the center for future automation so that a person does not have to constantly think about everything they do.
The last division is the Emotional division. This section of each center is accessed by a strong attraction or identification with the object. This appears in the Intellectual center in day dreaming of things one wants or with which they are identified. Understanding this makes it clear that one can see which part of a center they are using by what form of interaction they have with it (automatic, conscious attention, or desire) and it can be seen which center is being accessed by its output (instinctive reactions, physical, mental, or emotional).
It is also very important to understand that each center works at a difference speed. The slowest center is the Intellectual center. Thoughts seem as if they are quick, but one can verify their speed by attempting to be consciously aware of a fast, physical movement, or of their own repeated actions like driving a car. If one pays close attention they will see that they cannot perceive these movements, only put together an approximation of them afterwards in memory, which can be perceived as observation.
The Instinctive and Moving centers work at roughly the same speed, which is faster than the Intellectual center. This can also be seen if one does attempt to intellectually follow one’s movements, as they will then slow down as the mind forces them down to its own speed.
Finally, the fastest center is the Emotional center. Emotions move very quickly, although in most people they are slowed down closer to the speed of the Instinctive and Moving centers, due to dysfunctional use of them. Even slowed down to this rate, they are still faster than thought, which is why emotions seem to inexplicably happen and one finds themselves caught up in them before their Intellectual mind can realize that they have taken one over.
Understanding the different divisions of the centers and understand their different speeds will allow one to become more aware of what actions they are taking, and why, and start to less confuse the work of one center for another, which is the cause of most imbalances in our personal systems.