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Phi phenomenon

The term phi phenomenon is used in a narrow sense for an apparent motion that is observed if two nearby optical stimuli are presented in alternation with a relatively high frequency. In contrast to beta movement, seen at lower frequencies, the stimuli themselves do not appear to move. Instead, a diffuse, amorphous shadowlike something seems to jump in…

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History of research

PhiEdwin Boring
2 related topics

Experimental demonstration

TachistoscopeWolfgang KöhlerKurt KoffkaInterstimulus interval
4 related topics

Hassenstein–Reichardt detector model

Fourier method
1 related topics

Overview

Apparent motionStimuliBeta movementMax WertheimerHabilitation thesis
8 related topics

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Overview

Experimental demonstration

History of research

Hassenstein–Reichardt detector model

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Map overview Semantic statistics

Phi phenomenon

Nodes20
Edges19
Triples45
Avg. degree1.9
Density0.1
Components1

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Phi phenomenon

Top relations

related to Phi phenomenon and beta movement · 10
Phi phenomenon → Beta, Firstly, Gestalt School, If, Max Wertheimer, Phi, Psychology, Visual, Whereas, While Phi
related to Reverse phi illusion · 9
Phi phenomenon → As, First, Four, Fourth, It, Reverse, Second, Third, This
related to Reichardt model · 8
Phi phenomenon → As Fourier, Hassenstein, In, Reichardt, Reichardt Model, The, The Reichardt, This
related to Hassenstein–Reichardt detector model · 6
Phi phenomenon → Finally, Reichardt, The Hassenstein, Therefore, This, Two
related to External links · 2
Phi phenomenon → Beta, Phi
instance of · 1
Phi phenomenon → it might result in a percept of pure movement
see also · 1
Phi phenomenon → Color

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Important terminology

phi movement phenomenon two stimuli visual motion one beta model apparent illusion system wertheimer reversed would pure used object first

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
timinginstance ofThe Magni-phi demonstration is robust to changes of parameters0.80text
sizeinstance ofThe Magni-phi demonstration is robust to changes of parameters0.80text
intensityinstance ofThe Magni-phi demonstration is robust to changes of parameters0.80text
number of disksinstance ofThe Magni-phi demonstration is robust to changes of parameters0.80text
and viewing distance.Furthermoreinstance ofThe Magni-phi demonstration is robust to changes of parameters0.80text
the phenomenon may be observed more reliably even with only two elements if a negative interstimulus intervalinstance ofThe Magni-phi demonstration is robust to changes of parameters0.80text
phi phenomenon.Secondlyinstance ofit might result in a percept of pure movement0.80text
phi phenomenoninstance ofit might result in a percept of pure movement0.80text
beta movement are also different perceptuallyinstance ofit might result in a percept of pure movement0.80text
Phi phenomenonrelated to External linksBeta0.60section
Phi phenomenonrelated to External linksPhi0.60section
Phi phenomenonrelated to Hassenstein–Reichardt detector modelThe Hassenstein0.60section

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