Abstract
System theory is utilized in many kinds of practical field, not only business and engineering, but also medical field. This phenomenon does not doubt if you consider the definition or criteria of the theory. For getting a fruitful result in a finite field, trial and error have to be repeated without missing of already determined purpose and direction. In this respect, the following matter as emergency service, laboratory system and medical practice will be well suitable problems. On the other hand, neurological manifestation, in general, has a peculier feature that it shows a little modification by psychic function, especially in my-asthenic or posttraumatic patients. So, examining the neurologic patients, neurologist has to keep his mind in this fashion of combination of psychic function with neurologic one. Accordingly, using a thinking process like a flow-chart, an interaction or combination of both function and weighting within thoes must be calculated and considered along the patient's course, which is called an analysis by system theory. For this purpose small computer is sometimes necessary, whose result is able to direct the improvement and happiness to the patient and to be formulated to some pattern in general practice.
