Weird Butterfly Ceremony

課文：

Ever heard of “sleep drunkenness”?  Have you ever tried to reach for your phone when your alarm clock rings? Or when you wake up you don’t know where you are? Then you may have experienced what’s known formally as “confusional arousal.”

drunkenness：酩酊、醉態
formally：正式地
form：固體的形狀
formal：正式的
confusional：混亂的、困惑的
arousal：喚起、覺醒

More than 1 in 7 people in the U.S. may suffer from the condition, according to a study in the journal Neurology. In confusional arousal, sleepers wake up in a disoriented state and perhaps behave strangely in the process. Then condition often occurs when someone wakes up during non-REM sleep and can be caused by a “forced awakening” the study authors wrote. It can potentially cause violent behavior during sleep or right as the person wakes up.

suffer from：受…之苦、受…困擾
disoriented：分不清方向的、迷失的
disorient：使失去方向感、使迷失方向
in the process：在進行中
occur：發生、出現
non-REM sleep：非快速動眼睡眠
forced：強迫的、不自然的
potentially：潛在地、可能地

To find out how prevalent sleep drunkenness is, the researchers surveyed 19,136 people age 18 or older in 15 states. They found that 15.2 percent of respondents said they had experienced a confusional arousal episode in the previous year. The episodes were overwhelmingly linked to sleep disorders, which were present 70.8 percent of the time.

prevalent：普遍的、盛行的（= common）
prevalence：（n.）
surveyed：調查、測量
episode：（一次）發作（= a single event）
overwhelmingly：壓倒性多數地
disorder：失調症、不舒服、疾病、混亂、雜亂、凌亂
dis-：否定
order：秩序
present：現在的、當前的（= right there）

文法：
the study authors wrote（研究作者們如此說道）

特別補充：
unofficially：非正式地、非公認地
qualifiers：修飾詞