Gestalt Principles and Illusions

The simplest distortion illusion was the first to be described: by the father of experimental psychology, Wilhelm Wundt (1832—1920), who was Hermann von Helmholtz’s assistant at Heidelburg Wundt described the ‘horizontal—vertical’ illusion — that a vertical line looks longer than the horizontal line of equal length

Knowledge in perception and illusion

Knowledge in perception and illusion 2 different from the flat ghostly images in eves Some phenomena of illusion provide evidence for the uses of knowledge for vision; this is revealed when it is not appropriate to the situation and so causes a systematic error, even though the physiology is working normally

Illusion and Well-Being: A Social Psychological Perspective

Illusion and Well-Being: A Social Psychological Perspective on Mental Health Shelley E Taylor University of California, Los Angeles Jonathon D Brown Southern Methodist University Many prominent theorists have argued that accurate perceptions of the self, the world, and the future are essential for mental health

PHIL S140: Perception, Illusion, and Hallucination

Illusion, hallucination, and the problem of perception Selected philosophers (Broad, Strawson, Sturgeon, and others) on ordinary perceptual experience (handout, 5 pgs ) Watch/Look: [selected visual illusions, TBD] 3 Generalized arguments from illusion and hallucination Philosophical arguments (workshop #1)

A review of abnormalities in the perception of visual

Illusion Two lines a and b are physically the same length However, the arrow heads modulate the perceived size of the shaft, with line a perceived as longer than b Ponzo Illusion Both lines a and b are the same length However, the converging lines make the upper line a to be perceived as bigger than the lower line b Poggendorf Illusion The

Visuo-Haptic Illusions for Improving the Perceived

Haptic retargeting is a haptic illusion technique, based on the visual dominance effect, that is applied in cases where the user reaches to touch a virtual object By utilizing this technique, it is possible to repurpose a single physical object to provide passive haptic sensation for multiple virtual objects [3] Re-

The Leaning Tower illusion: a new illusion of perspective

The illusion is not restricted to towers photographed from below, but works well with other scenes, such as the tram lines in figure 3 What the illusion reveals is not a failure of perspective per se, but the tendency of the visual system to treat two side-by-side images as if part of the same scene However hard we try, we seem unable to see