抄録
The experiment was carried out in order to evaluate the drunkenness due to objective alcohol consumption.
Twenty three healthy Japanese male adults were provided with 540ml of Japanese Rice Wine, which was consumed in 30min. before the evening meal. The TAF test, electroencephalography (EEG) and microvibration recording (MV) administered to the examinees at 10a.m. (control value), before drinking (pre-value), and 10 and 50min, after drinking (post-value). The EEG lead from the occipital area to the right ear, and MV lead from the left thenar, were analyzed in δ (2-4c/s), θ (4-8c/s), α (8-13c/s), β1 (13-20c/s) and β2 (20-30c/s) waves.
Results are as follows:
1. TAF-L at 10 and 50min. after alcohol drinking lowered significantly.
2. In EEG at rest, the β1 wave showed a significant increase 10min. after alcohol intake. In EEG during TAF-test, the δ, β1 and β2 waves decreased significantly 10min. after alcohol intake, and the δ, θ, β1 and β2 waves also decreased 50min. after alcohol intake.
3. Fifty minutes after alcohol intake a significant correlation between lowering of TAF-L and decrease of α wave in EEG was recognized, and an increase of θ wave in EEG was seen in each of 14 of the 18 examinees with a lowering of the TAF-L.
4. Due to alcohol the β1 and β2 waves of MV at rest increased significantly, and the α wave of MV during TAF test decreased significnatly 50min. after alcohol intake. Comparing MVs at rest and during TAF-test, all waves of control and before alcohol intake of the latter showed significant increases, while the δ, θ, β1 and β2 waves during TAF test at 10 and 50min. after alcohol intake increased significantly, but the α wave showed no significant change.
These results prove that cerebral activities are lowered as a result of alcohol intake and showed that drunkenness can be diagnosed according to function of the concentration maintenance (TAF) as a performance test.
