It can happen when you are falling asleep ( known as hypnogogic or predormital form ) or when waking up ( known as hypnopompic or postdormital form ) 這會(huì)發(fā)生在人入睡(被稱為半睡或睡前狀態(tài))或醒來(被稱為半醒或睡后狀態(tài))的過程中。
百科解釋
A hypnopompic state (or hypnopomp) is the state of consciousness leading out of sleep, a term coined by the psychical researcher Frederic Myers. Its twin is the hypnagogic state at sleep onset; though often conflated, the two states are not identical.