The origins of joy and sorrow

Above we have mentioned emotions. They do play a huge role in our life, which is full of joys and sorrows. While our feelings, mood swings have a significant impact not only on the state of mental processes, but also on the work of internal organs. What caused joy or sorrow, what determines the sign of our emotions - positive or negative?
The answer to this question is given a reasonable P. Century Simonov information theory of emotionthat comes from the relationship between our needs and information on the degree of their satisfaction. That's one aspect of it. Having specific needs, we at the same time and have some hope of meeting them. For example, we have agreed on applying for a new job. If the agreement is strong, confident in its implementation full implementation will not cause us any emotions - we got exactly what we expected; information on the extent of satisfaction of the needs exactly coincided with previously available. From positions of the theory of information in this case the information is not at all, for information, strictly speaking, is called only new information, different from the previous. However, in our case, possible other things. It turned out that we provide to more attractive jobs. Information on the extent meet the demand exceeds the available - there is a positive emotion, we rejoice. If the opposite occurs, we suggest the worst option, there is a kind of lack of information about the degree of satisfaction of our desires; the result is a negative emotion.
Emotions are powerful factor in mobilizing our brain active, increasing its capabilities.
B. I. Lenin wrote: "...without the "human emotions never was, is not and cannot be the human quest of truth". It is when creative activity emotions - our first assistants.