Using your brain structure, your dominance also determines which of your non-preferred modes you are most likely to use. Two of your less efficient modes are more available to you because they are located next to your preference and are connected to it by substantial neuronal bridges. Where such bridges exist, communication between modes and consequently iterative thinking is faster and easier. It is these two non-preferred modes, connected to your preference that you can use as auxiliaries.

Mutually Available Modes

Bridges Connecting Them

Frontal Left and Frontal Right

Corpus callosum

Basal Left and Basal Right

Corpus callosum

Frontal Left and Basal Left

Conduit between Broca’s and Wernicke’s

Frontal Right and Basal Right

Conduit between two unnamed, similarly located areas, in right hemisphere

Frontal Left and the Basal Right

Not connected

Frontal Right and the Basal Left

Not connected

Your third non-preferred mode, the one that is not next to your preference and is not connected to it by a bridge built of neurons, is your natural weakness. It is as inefficient as your other non-preferred modes and is located diagonally across the brain from your preference.  As no diagonal bridges exist in the brain, getting from your preference to this non-preferred mode is difficult. And, communication between this mode and your preference is significantly more work.  It is this third non-preferred mode, the one that is not connected to your preference, that you cannot readily use as an auxiliary and that you must ultimately accept as your weakest mode or inferior function. (Benziger, I. Katherine, PhD. Thriving in Mind – The Art and Science of Using Your Whole Brain. p. 55. IL: KBA The Human Resource Technology Company, 2006.)