Abstract
I made a series of studies on the olfactory fatigue.The results were summarised as follows:Part I: The degree of threshold shift, examined by change of either duration time of smell stimulus or density of smell substance, was generally irregular. No regulation on the olfactory fatigue was recognized. Thus necessity and possibility of the new method of the examination of the olfactory fatigue was demanded.Part II: Using my new method, named the increasing stimulus method, examinations of the olfactory fatigue were performed on groups of persons normal in health and with various nasal diseases.Fatigue curves could be devided into 4 types (Type I, II, III, IV), and Type I regarded to normal type, II, III, and IV pathological type. According to the studies, signficant corrlations were found to exist between the chronic nasal diseases and Type IV.Part. III: Examinations of the relation on the olfactory fatigue between both cavities, and of the fatigue curve type of each nasal cavities were conducted. From these results obtained, conclusion was drawn that the localisation of olfactory fatigue would be peripheral.
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