Emotional sweating rates were measured by using the apparatus for continuous recording of emotional sweating rate when solution of citric acid was dripped on some healthy volunteer's tongues. It was investigated the correlation between the normal variation of emotional sweating rates and the subjective strength for citric acid taste. The follwing was found out ; (a) There are two types of the correlation between the normal variation of emotional sweating rates and the concentration of solution of citric acid. (b) The normal variation of emotional sweating rates correlate with the subjective strength for citric acid taste.
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