hypnagogic image

(Psychology) psychol an image experienced by a person just before falling asleep, which often resembles a hallucination

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As Wilbur remarks, the fluid shifting of the figures suggests the behavior of hypnagogic images; but the agitation of the draperies would also produce a perpetual ambiguity of architectural form, and the effect would resemble that which Pevsner ascribes to the interior of San Vitale in Ravenna; "a sensation of uncertainty [and] of a dreamlike floating." (Wilbur 1967: 112)

We thus establish the Universe on a purely geometrical basis

The declared aim of the artist is to give dreams, visions, and hypnagogic images the force of concrete reality.

Finding the way back through systematic confusion

There are abundant examples of phenomena that appear to utilise such a confusion: spontaneous cases, which often involve "realistic dreams," lucid dreams, false awakenings, hypnagogic images, waking imagery, and sleep paralysis; and states in which reality and imagination are often confused.