hypnagogic

I insist on the fact that the drawings thus obtained lost more and more, through a series of suggestions and transmutations that offered themselves spontaneously - in the manner of that which passes for hypnagogic visions - the character of the material interrogated (the wood, for example) and took on the aspect of images of an unhoped for precision, probably of a sort which revealed the first cause of the obsession, or produced a simulacrum of that cause.

Max Ernst "On Frottage" 1936

The preferred spelling, according to Wordie's resident etymologist Qroqqa. See note at that second-rate o-heavy spelling hypnogogic.