hypnagogic

adj. describing or relating to the drowsy state that occurs in the transition from wakefulness to sleep. A transient, dreamlike image experienced while falling asleep is called a hypnagogic hallucination. Compare hypnopompic.

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Psychology term of the day

December 22nd 2024

alternating perspective

the abrupt transition from one perspective to another that occurs when an ambiguous figure is viewed. Only one perspective can be perceived at a given time. See Necker cube; reversible figure; Rubin’s figure.