ムラヤマ ノリオ    Murayama Norio
   村山 憲男
   所属
人間社会学部 心理学科
 
生活機構研究科 心理学専攻
 
生活心理研究所 所属教員
 
生活機構研究科 生活機構学専攻
   職種
准教授
言語種別 英語
発行・発表の年月 2018/12
形態種別 学術雑誌
査読 査読あり
標題 Effects of zolpidem/triazolam on cognitive performance 12 hours after acute administration
執筆形態 共著
掲載誌名 Sleep Med
掲載区分国外
巻・号・頁 52,pp.213-218
著者・共著者 Yusuke MATSUNAGA, Hirokuni TAGAYA, Yuko FUKASE, Yuko HAKAMATA, Norio MURAYAMA, Yuji KUMAGAI, Masakazu KUROYAMA
概要 Objective: Most previous studies have concluded that decreased cognitive function and performance due to ultra-short acting hypnotics do not persist after 6-9 h post-administration. This study examined the effects of ultra-short acting hypnotics on cognitive function and performance 12 h after administration, ie, a time considered sufficient for the effects of hypnotics to disappear.

Methods: Thirteen healthy young male volunteers (mean age, 23.4 ± 3.2 years) participated in this study. Participants attended three sessions of polysomnography (PSG) recording preceded by oral administration of placebo for the first session, and 5 mg zolpidem or 0.25 mg triazolam for the second and third sessions, in a double-blinded, randomized manner at intervals of at least five days. A cognitive test battery was administered following each session, consisting of a psychomotor vigilance task (PVT), which reflects alertness and sleepiness, digit symbol substitution test (DSST), which reflects attention and working memory function, and assessment of subjective sleepiness and mental condition using a visual analog scale (VAS).

Results and conclusions: The administration of hypnotics significantly increased total sleep time, sleep efficiency, and sleep stages 2 and 4, and significantly decreased wake after sleep onset and sleep stage 1. PVT parameters were not affected by the administration of hypnotics, but DSST score was significantly lower, and "subjective alertness," "vigor," and "sadness" significantly deteriorated, after administration. In conclusion, while objective sleepiness disappeared 12 h after the administration of ultra-short acting hypnotics, their effects to decrease cognitive function persisted even after 12 h post-administration.