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Physiological canvas mental acts

On the other hand, the opening of conditioned reflexes gave the key to understanding the nature of mental acts, for imposing them on physiological canvas.
First of all, the data shows that the work of the cerebral cortex is the closure of the links between the various nerve cells until not connected among themselves, created materialistic doctrine of associations. Reflex is an Association. Any external impression landscape, melody, experience, etc. - causes excitation of certain cells in the cortex. Excitation of a certain group of cells is never isolated, because at the same time there are other excited the centers. So, a new melody accompanied by stimuli from the environment in which we hear it, from the traces of current Affairs, etc. In result between excited centers arise due to the law of education of conditioned reflexes. Now repeated irritation of one group of cells can cause agitation another, and at the sound of this music may emerge in the memory setting of the concert, our experiences in that day, etc. On the daily emergence of new associations based accumulation us life experience. Thanks to the associations life experiences remain in the brain. If we remember that in the cerebral hemispheres there are about 50 billion nerve cells, each with a few shoots, and even those branched, it will become clear that the educational opportunities of new associations unlimited.
Knowing now the mechanism of formation of associations, we understand that continually occur in the human brain chain of memories depend not from the tyranny of souls in understanding idealists, and from the interaction of traces of various former stimuli. In them the entire contents of the psyche.
The possibility of formation in the brain of the new bonds is based primarily on the fundamental property of neural tissue - tracking the phenomena in it. In fact, for the formation of ties need to have something that you want to associate. Such communication objects and are the trace left by each irritation. There are two theories explaining the nature of such traces, - electrical and chemical. According to electrical theory, every signal that comes to the brain, begins to circulate in closed circuits of nerve cells and fibers. According chemical theory traces are causing changes to those substances that are responsible for the transmission of hereditary information, i.e., nucleic acids. There is evidence to suggest that there are both mechanisms of memory, and initially, about 1.5 hours, the information is stored in electric form, then fixed chemically. Why call such a figure? She suggested by clinical observations.
If a person has suffered a concussion with loss of consciousness, in the future, upon recovery, he remains only one deviation - retrograde amnesia - symptom is that people are completely oblivious to all the events that happened to him during the last one and a half hours before the injury. All the other facts of his previous life memory stores. We can assume that the injury erases traces stored in electric memory, and that which has passed in the chemical form, fixed very firmly, and if people do still alive, he saves those marks.
Thus, our memory is based on two properties of the brain. First, it is the trace of the phenomenon. Secondly, it is of the Association, thanks to which each track is not isolated, and is associated with other signs and can be extracted in this way. He does not sink in the ocean of other tracks.
The ocean this is truly unlimited. Our memory is boundless. We are not outlive them for our lives. In its time the famous chess player Emanuel Lasker, world champion in over a quarter century (1896-1921,), wrote in his textbook of chess following. Now he is 57 years, and the last 32 years of his life he has spent on it, to forget all that filled his head first 25 years; his efforts were successful, and the memory is free again for the information and impressions. Of course, Lasker was wrong. Scientists argue how much memory capabilities we load for his life - 2 % or 20 %, however, that we are not fully use its resources, it is indisputable.