Olfactory sensitivity at rest and during sound stimulation
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Olfactory tests at rest demonstrated the following: 1) with repeated tests there was a training effect, and sensitivity rose, 2) towards the end of the day, olfactory sensitivity was reduced, 3) when a single test only is given, the olfactory threshold is very much higher. The olfactory sensitivity to the odor of peppermint and clove oils is increased by sound at 300 c/s, while the sensitivity to camphor and ionone is decreased. The author suggests a classification of odors to be based on the effect of sound on olfactory sensitivity. A conditional reflex decrease in the sensitivity to the odor of ammonium hydroxide was found to be produced by sound stimulation.
KeywordsPublic Health Ammonium Hydroxide Camphor Ammonium Hydroxide
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