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An example of the scintillating grid illusion. Dark dots seem to appear and disappear at intersections. The scintillating grid illusion is an optical illusion, discovered by E. and B. Lingelbach and M. Schrauf in 1994. [2] It is often considered a variation of the Hermann grid illusion but possesses different properties. [2] [3]
A trompe-l'œil body painting by Joanne Gair. The dress: An optical illusion resulting from the brain's attempt to discount coloured tinting from daylight and other sources. [1] The dress was a viral phenomenon, which was either seen as blue and black or as white and gold. Its true colours were eventually confirmed to be blue and black. [2]
Lucid dreams by definition occur during sleep, but they may be regarded as hallucinatory experiences in the same way as non-lucid dreams of a vivid perceptual nature may be regarded as hallucinatory, that is they are examples of 'an experience having the character of sense perception, but without relevant or adequate sensory stimulation ...
Other examples are the famous Müller-Lyer illusion and Ponzo illusion. Paradox illusions (or impossible object illusions) are generated by objects that are paradoxical or impossible, such as the Penrose triangle or impossible staircase seen, for example, in M. C. Escher's Ascending and Descending and Waterfall. The triangle is an illusion ...
A painting depicting Daniel O'Connell dreaming of a confrontation with George IV, shown inside a thought bubble. A dream is a succession of images, ideas, emotions, and sensations that usually occur involuntarily in the mind during certain stages of sleep. [1]
Dream psychology is a scientific research field in psychology. In analytical psychology, as in psychoanalysis generally, dreams are "the royal road" to understanding unconscious content. [H 1] However, for Swiss psychiatrist Carl Jung, its interpretation and function in the psyche differ from the Freudian perspective. Jung explains that "the ...
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The Nine Dot Problem with solution. Most individuals fail to draw lines beyond the dots that compose the square, and are unable to solve this puzzle. The Nine Dot Problem is a classic spatial problem used by psychologists to study insight. The problem consists of a 3 × 3 square created by 9 black dots.