It has been widely accepted that human conscious activity seems to be highly related to brain cortical activity, however conscious activity has been demonstrated anecdotally with minimal or nil activity via electroencephalography. Subconscious processes refer to all physiological functions that we do not consciously influence. They are autonomic in essence but can be highly disrupted by cognitive and cortical stress.
Stress patterns always correspond to a specific amount of neurotransmitters and hormones released with the obvious effect on health, physiology and disease.