アブストラクト（39巻2号：The Bulletin of Kanagawa Dental College）

The Bulletin of Kanagawa Dental College

English

Title　： Evaluation of drunkenness by measuring Psychomotor Vigilance Tasks (PVT)
Subtitle　： Selective Proceedings of 45th General Meeting of Kanagawa Odontological Society, 2010
Authors　： Isao Yamamoto*1, Takeshi Haseba*2, Youkichi Ohno*2, Kimiko Nakagawa*1, Hiroshi Ohira*1, Yoshihiro Yamada*1
Authors（kana）　：
Organization　： *1Division of Forensic Medicine, Department of Dental Sociology, Kanagawa Dental College, *2Department of Legal Medicine, Nippon Medical School
Journal　： The Bulletin of Kanagawa Dental College
Volume　： 39
Number　： 2
Page　： 138-140
Year/Month　： 2011 / 9
Article　： Report
Publisher　： Kanagawa Odontological Society
Abstract　： [ABSTRACT] We measured Psychomotor Vigilance Tasks (PVT) to evaluate the degree of drunkenness and/or effects of alcohol on brain function together with blood alcohol concentration (BAC). Nine healthy males were given beer within 40 minutes at a dose of 0.8g/kg. Among various PVT values, RRT Intercept and Median RT showed a higher correlation with BAC. (r = 0.67, p <0.0001) (r = 0.56, p <0.0001). RRT Intercept is a typical simple reaction time and Median RT is the median reaction time. On the other hand, the frequency of "Lapse" (more than 500ms of reaction time) and "false starts" (less than 100 ms of reaction time) showed no correlation with BAC, though these values reflect the lowered performances due to drinking. These data suggest that PVT is useful to objectively and comprehensively evaluate the effects of drinking on brain functions, including the independent effects from BAC. [INTRODUCTION] Drinking paralyzes higher brain functions to reduce the rate of reaction, judgment, and capacity for exercise. In order to understand the influence of drinking on driving, it is necessary to evaluate individual differences in drunkenness or within-person fluctuation due to psychosomatic conditions in drunkenness, in addition to blood ethanol concentration (BAC).
Practice　： Dentistry
Keywords　： Psychomotor Vigilance Tasks (PVT), degree of drunkenness, reaction time, blood ethanol concentration (BAC)