抄録
Employing the test method of the ability for the quick action of the individual subject reported by Matumoto et al., which is a sort of measuring the selective reaction time to the visual stimulus, the test was carried out on the subjects (22 males, 19-61 y) during drinking alcoholic beverage (sake or beer). The subjects drank the wine with their own pitch with some cups, and the test was carried out every 30 minutes from the commencement of the drinking, and at the same time the total amount of sake (or beer) drunk till the time was recorded. The obtained results were in the following.
1) With increase of the amount of wine drunk, the score of the test varied in two ways, namely it decreased with increase of the amount of sake (or beer) simply or at first increased and then decreased.
2) The amount of wine which decreased the score of the subject to the half of the normal state was measured. It ranged from 150 cc to 1050 cc of sake, but for great many of the subjects it was ca. 500 cc.
3) From the results of the test, it was confirmed that the change of the ability for the quick action in get drunk state was different from subject to subject, namely it could not be assumed merely as the amount of the drunk sake (or beer).
