Optical Illusions of Motion

Thompson, Silvanus P.

doi:10.1093/brain/3.3.289

Cited by 27 publications

(24 citation statements)

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“…Different adaptation stimuli were used in each experiment: In Experiment 1, it was a 7 Â 7 matrix of blue crosses. In Experiment 2, the adaptation stimulus was a rotating sectored disc (Aitken, 1878) with 16 sectors alternating between black and white and in Experiment 3 we used a linear spiral with four alternating black and white segments (Thompson, 1880). The latter adaptation stimuli were presented at a mean luminance of 15 cd/m 2 whereas the blue crosses against the black background were shown at 1.8 cd/m 2 (adaptation and test).…”

Section: Stimulimentioning

confidence: 99%

Motion-aftereffect-induced blindness

2009

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Motion-induced blindness (MIB) describes the occasional disappearance of salient visual objects in the presence of moving features (Y. S. Bonneh, A. Cooperman, & D. Sagi, 2001). Here we test whether motion adaptation and the ensuing motion aftereffect (MAE) are sufficient to trigger disappearance of salient targets. In three experiments, observers adapted to either rotating or static stimuli. Immediately afterwards, a static test pattern was presented consisting of a mask with texture elements and three superimposed target dots in a triangular arrangement. Observers reported dot disappearance and reappearance. The results clearly show that illusory motion in a static test pattern, following motion adaptation, promotes the disappearance of target dots. Furthermore, disappearance is modulated by the depth relationship between test pattern and targets, increasing for targets placed stereoscopically behind the test pattern. We conclude that MIB is influenced by perceived relative motion between depth-segregated features.

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Section: Stimulimentioning

confidence: 99%

Motion-aftereffect-induced blindness

2009

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“…Thompson and Thompson (1920). Upper centre, stimuli for investigating MAEs (from Thompson, 1880). Upper right, Thompson's (1879b) illustration of the pseudophone.…”

Section: Silvanus P Thompson On Perceptionmentioning

confidence: 99%

“…Thompson was unaware that the effect had been described earlier by Purkinje (1825), who also observed it in a pattern of concentric circles. Thompson (1880) modified and illustrated the stimulus and the 'strobic circles' (as he called them) were printed for sale as well as being used in advertisements for Pears' soap ( Figure 1). …”

Section: Silvanus P Thompson On Perceptionmentioning

confidence: 99%

Silvanus Phillips Thompson on Perception

Wade

2017

Perception

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“…Following observation of a moving surface, like descending water, stationary objects appear to move in the opposite direction. This MAE was described graphically by Addams (1834) after observing the Falls of Foyers in Scotland, and it was called the waterfall illusion by Silvanus Thompson (1880). As was the case for stereoscopic depth perception, most of the research on this topic in the 19th century was conducted in Germany (see Wade, 1994).…”

Section: Nineteenth Century Precursorsmentioning

confidence: 99%

Surveying the seen: 100 years of British vision

Wade

Bruce

2001

British J of Psychology

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Perceptual phenomena and their interpretations have fashioned the course of psychology. This article surveys how theories of visual perception and methodologies have developed during the lifetime of the British Psychological Society. The experimental study of vision was instigated by British natural philosophers in the early nineteenth century but this impetus was not maintained thereafter. Not until the 1930s and 1940s did research on perception resume in earnest within British universities. The adoption of concepts (such as schema) potentially grounded in neural organization, particularly by Bartlett and Craik, accelerated experimental, theoretical and applied vision research. From mid-century the influence of information processing models of perception became increasingly dominant, and they were often integrated with the rapidly expanding understanding of neurophysiological underpinnings. The epitome of these developments was Marr's model of vision which, in our view, marked the start of the modern era of vision research. Computers have transformed the nature of stimulus control and response measurement in perceptual experiments. More naturalistic stimuli can be presented and manipulated, and complex behavioural responses, such as patterns of eye movements, fractionated. Non-invasive recording of brain activity to visual stimulation has similarly been transformed with a variety of methods for imaging brain activity. Neuroimaging has been applied to localizing perceptual and cognitive functions and in studying patients with known deficits in visual recognition. However, the eagerness with which the computer has been adopted by perceptual psychologists is likely to be tempered by a growing awareness of the differences between viewing scenes and simulations of them.

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Optical Illusions of Motion

Cited by 27 publications

References 0 publications

Motion-aftereffect-induced blindness

Motion-aftereffect-induced blindness

Silvanus Phillips Thompson on Perception

Surveying the seen: 100 years of British vision

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