A misconception or misinterpretation of external stimuli and giving them one’s own idiosyncratic meaning.

false interpretations of environmental stimuli.

Perceptions created in the visual system and brain that differ from the "objective" environment as measured by physical instruments.

Illusions are generally performed from a backward spin, but have been also executed forward. As a backward spin, the skater swings the free leg forward and up then reaches down toward the ice with the hand on the skating side as the free leg swings to the back and upward. This combination of movements creates an illusion of the skater rotating like a pinwheel around her hips. A single illusion provides a dramatic finale to a spin combination. When performed in a series, sequential illusions resemble a windmill rotating about its axis. In the best illusions, the skater appears to invert completely as the free leg swings upward and the torso drops down to the skating leg. Much of the drama of the illusion is lost when skaters perform sequential illusions that do not achieve this exaggerated position. Instead, the skater seems to bob up and down like a rotating teeter-totter.

Illusions is a surreal Colecovision video game in which the player maneuvers blobs around the screen, trying to get them to merge, or, alternately, split apart. At times, lizards may chase the blobs around. The water bucket, when spilled, can cause the lizard to turn into a fish.

Illusions: The Adventures of a Reluctant Messiah is a 1977 book by Richard Bach that questions our views on reality.

Illusions is the second album of Sadus originally released in 1988. It was re-issued on CD by Roadrunner Records as Chemical Exposure in 1991.

A disc of patterned metal which is inserted into the top of a setting. The gem is then set into and surrounded by the disc in order to give the illusion of a larger gem.

A disc of metal which is inserted into the top of a setting. The stone is set into and surrounded by the disc which is diamond cut (patterned) in a facetted pattern to give the illusion of a larger stone.

(3rd dimensional thoughts or images which reflects something that does not exist, created for the experience)