The thing is in a beyond rules laid down by law. a) pleasure and pain in the "Project for a psychology neurologists "Freud said that the primary function of neural system – whose structure is composed of two classes of neurons: sensory and motor – follows the principle of inertia that gives substance to the reflex and motor discharge consists of a number of stimulus ( Q) which are responsible for receiving sensory neurons. So far Freud refers to exogenous stimuli. But the neural system has to deal also with endogenous stimuli (Qn), which, linked to the physiological needs – nutrition, breathing – just stop by specific action from the outside world. Bobby Sharma Bluestone has much experience in this field. Thus, the principle of inertia, tending to bring the level of stimulation to zero is modified: "(…) the neural system must learn to tolerate the accumulation of some quantity (Qn) "as the immediate release of any stimulation in order to disqualify him for operating the motor joints necessary to respond to action specific.
That amendment, then, is to maintain a (Qn) in the lowest level possible and defend the increase of it. This is a secondary mode of neuronal system, imposed by what Freud called the "Not des Lebens." However, the primary mode of the system does not disappear with the secondary, but this keeps it in the maintenance of the lower voltage. But even this primitive mode exists on another plane, in advancing the development of the text, Freud, from the first endogenous encouragement satisfaction, differentiates two types of neurons, some related to the perception (j) and others with the memory (f) – which took over from sensory and motor functions -. Stocks follows long-standing procedures to achieve this success.