This article reviews the study of tilt illusions by focusing on new illusions or new demonstrations reported by Japanese researchers after the review of Oyama (1960). Steady progress was observed in a variety of illusions. In particular, the development of the study of the Café Wall illusion and its related illusions during the past decade was remarkable. The study of the spiral illusion has al...

Partial and full own-body illusions of neurological origin have been claimed crucial to understand the contribution of bodily experience and perception to self-consciousness. Whereas partial body illusions are relatively common and well defined, much less is known about full own-body illusions, and even less is known about these illusions in children. Here we describe a 10-year-old patient with...

Certain patterns of stripes are judged to be unpleasant to look at. They induce illusions of colour, shape and motion that are sometimes perceived predominantly to one side of fixation. People who suffer frequent headaches tend to report more illusions, and if the pain consistently occurs on the same side of the head the illusions tend to be lateralized. The parameters of the patterns that indu...

BACKGROUND The peripheral deafferentation induced by regional anaesthesia (RA) results in misperception of size-shape (S) and posture (P) of the anesthetized limb. During RA, most patients seem to describe motionless 'phantom limbs' fixed in stereotyped illusory positions, suggesting that RA could unmask stable postural patterns. The question of whether movement illusions exist or not after ana...

Our sensory systems are useful biological mechanisms that provide us with indispensable and usually highly reliable information about our immediate environment and the state of our own body. However, in some cases we experience sensory illusions, when the deliverances of our senses fail to agree with physical measurements. Such phenomena have been known since antiquity and have always aroused c...

Sound-induced flash illusions, first described in 2000, provide a valid example of perception as a multisensorial experience where all sensorial modalities work together. Audio-visual illusions can be classified in “fission” and “fusion” illusions. Whether one flash is accompanied by two or three auditory stimuli (or beeps), it’s often perceived as multiple flashes (fission illusion), by contra...