[A study on application of the function of maintaining concentration (TAF) for chronic schizophrenia]

The function of maintaining concentration (TAF) is the new method of the evaluation of fatigue that has been devised by Takakuwa. Chronic schizophrenia are observed in everyday affairs, as if they have "fall of work will and lowering of work sufficiency". Reasonable approaches to the evaluation of these state of chronic schizophrenia may be provided by TAF test. The patients who are grasped by TAF test as lowering of their ability are recovered by prescription of the apt dose of an antipsychotics. The interruption or overdose of the medicine leads again to a lowering of TAF. No change of TAF after the interruption of the medicine is considered as the remission. The all 3 cases may be indicated that TAF test has clinical application.