First after the passage of the stimulus they are inmodificadas, that is to say, they receive amount they unload and it, obtaining therefore tension zero, second they retain amount and they are modified by each one of the successive passages of the stimulus, which returns more apt them for the conduction from the tension of one to another neuron. These interneurnicos contacts Freud denominate facilitation. The function of the memory is composed by the accumulation of these differentiated facilitations. In as much these facilitations they favor the unloading of the stimulus, serve the primary function. Even there is another process that returns to put to the apparatus concerning this operation: the pain. In the text is described it like most imperative of all the processes, consists of the impression of great amounts of (q), by fault of the teleneuronal system that works like a barrier to the stimuli (q), which does that at system j a smaller amount arrives from this stimulus, the amount reduced causes that concerning this system the unloading takes place in such a way that it arrives at the tension zero – where neurons f appear as permeable as neurons j, producing facilitations such that both systems are compared. Freud outlines the consequences of the experience of satisfaction and the experience of pain the following way: In first two types of neurons are catectizadas that it classifies like and b.

The neurons to correspond to the perception of the object by means of which the satisfaction took ahead. The b corresponds to the reflected movement that followed the specific action. This catectizacin is simultaneous, when a new push of the necessity takes place to and b is simultaneously catectizadas, that is to say, the first neuron in undergoing this activation is a (image of the object) which produces a hallucination that leads immediately to the activation of the neuron b (reflected act) whose consequence is the qualification of displacer produced in W.