Fragmentary and en bloc blackouts: Similarity and distinction among episodes of alcohol-induced memory loss
Fragmentary and en bloc blackouts: Similarity and distinction among episodes of alcohol-induced memory loss
复制标题
DOI：
10.15288/jsa.2003.64.547
复制
发表时间：
2003-07-01
期刊：
影响因子：
--
通讯作者：
Fromme, K
中科院分区：
文献类型：
--
作者：
Hartzler, B;Fromme, K
目的：全身性和片断性停电是酒精性健忘症的两种不同形式。前者是醉酒事件的完全和永久性记忆丧失的例子，而后者是通过提供线索促进经验提取的情节。除了这种病因学上的差异，人们对这两种昏迷类型的描述性维度知之甚少。目前的研究评估了他们的特征，这是一组酗酒的年轻人报告的。方法：对136名青壮年志愿者(男性占54%，平均年龄22.71[2.23])进行时间线追踪评估，以收集有关整体和片段性昏迷的发生和特征的描述性信息。结果：尽管样本报告的总体停电发生率与先前研究报告的比率一致，但零星停电的患病率和发生率是整体停电的三倍多。一个令人惊讶的发现是，这两种昏迷类型的相应血液酒精浓度的范围和分布相似。大多数集体停电涉及同时使用非法物质；据报道，使用多种物质的零星停电很少。此外，对整体停电的主观评价相当负面，而零星的停电仅被评估为轻微负面。结论：除了病因学上的区别，整体昏迷和零星昏迷在几个描述性维度上有所不同。这些集体发现扩大了人们对饮酒后伴随着记忆丧失的经历多样性的理解。
Objective: En bloc and fragmentary blackouts are distinguishable forms of alcohol-induced amnesia. The former are instances of full and permanent memory loss for intoxicated events, whereas the latter are episodes for which retrieval of experiences is facilitated by provision of cues. Beyond this nosological difference, little is known about descriptive dimensions of the two blackout types. The current study assessed their characteristics as reported by a group of heavy drinking young adults. Method: A sample of 136 young adult volunteers (54% male; mean [SD] age = 22.71 [2.23]) were administered a Time-Line Follow-Back assessment, expanded to gather descriptive information about the occurrence and characteristics of en bloc and fragmentary blackouts. Results: Although overall reporting of blackouts by the sample mirrored rates reported in prior research, prevalence and incidence of fragmentary blackouts were more than threefold those of en bloc blackouts. A surprising finding was that the two blackout types exhibited a similar range and distribution of corresponding blood alcohol concentrations. Most en bloc blackouts involved concurrent use of illicit substances; polysubstance use was reported for few fragmentary blackouts. In addition, subjective evaluations of en bloc blackouts were quite negative, whereas fragmentary blackouts were evaluated as only mildly negative. Conclusions: Beyond nosological distinctions, en bloc and fragmentary blackouts differ on several descriptive dimensions. The collective findings expand understanding of diversity in experiences that accompany memory loss after drinking.