抄録
Tremor, which is the invisible mechanical vibration observed at body parts, is classified into physiological and pathological tremors. Physiologial tremor is observed at body parts of normal subjects. It was reported that an oral dose of alcohol could decrease the amplitude of pathological tremor. Therefore, there might be much possibility of the physiological tremor replacing alcohol concentration in expiration as an non-invasive and easy measurement method to estimate the influence of drinking. We attempted to clarify the influence of drinking on the physiological tremor. In this paper, power spectrum of the physiological tremor of the index finger were measured at every 15 minutes for 3 hours under drinking and normal (non-drinking) conditions. Subjects were 10 males aged 20 to 25 years. Under drinking condition, we instructed subjects to drink 43% proof whiskey mixed with water. The amount of an oral dose of the whiskey was 1ml per 1kg of subject's weight. It was found that total power values of the physiological tremor from 15 to 135 minutes after drinking were relatively smaller than that before drinking under drinking condition. From the results of t-test, it was clear that the influence of drinking could be estimated by the total power of the physiological tremor.
