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Proposal of the Discrimination Threshold in Olfaction: Trial in Normal Persons Katsuhisa Ikeda 1 1Department of Otolaryngology, Tohoku University School of Medicine pp.37-40
Published Date 1987/1/20
DOI https://doi.org/10.11477/mf.1492210248
  • Abstract
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 It is more difficult and less reliable to measure the recognition threshold than to do the detection threshold in T & T olfactometer. The causes are thought to be odor experience, social customs, liking, character and expression of language in the subjects, and how to treat the subjects in the experimenters. In order to resolve the problems of the recognition threshold, the author proposed the discrimination threshold and tried it to 20 males and 20 females with normal olfaction. The discrimination threshold means the minimal level of one odor where subject knows the odor to differ from the other odor which has been recognized.

 By the use of the discrimination threshold, the problems of the recognition threshold were resolved to a some extent. Although the discrimination threshold was located between the detection and recognition threshold, there were differences between the detection and recognition threshold, there were differences between sexes or odors. The differences suggest that factors to have an effect on the measurement of the recognition threshold show different degree between sexes or odors.


Copyright © 1987, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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