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Optical Illusions: Difference between revisions
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== Gestalt Switch == | == Gestalt Switch == | ||
[[File:Gestalt switch.png|alt=Gestalt switch|thumb|Gestalt | [[File:Gestalt switch.png|alt=Gestalt switch|thumb|'''Figure 1'''. Gestalt Switch - ''Can you see the Eskimo?'']] | ||
In psychology, a | In psychology, a Gestalt Shift ('''Figure 1''') is when a person's perception suddenly changes. When this state locks into one perspective this is termed a ‘paradigm shift’. | ||
=== Effect === | === Effect === | ||
Dots which are not centred in your visual field should appear to flash from black to white, in a 'scintillating' effect. | Dots which are not centred in your visual field should appear to flash from black to white, in a 'scintillating' effect. | ||
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== Grid Illusion or ''Scintillating Grid'' == | == Grid Illusion or ''Scintillating Grid'' == | ||
[[File:Grid illusion.png|alt=Grid illusion|thumb|'''Figure | [[File:Grid illusion.png|alt=Grid illusion|thumb|'''Figure 2'''. Grid illusion - ''where is the black dot?'']] | ||
The scintillating grid is a ''simultaneous lightness contrast'' illusion. | The scintillating grid is a ''simultaneous lightness contrast'' illusion ('''Figure 2'''). | ||
=== Effect === | === Effect === | ||
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== Troxler Effect == | == Troxler Effect == | ||
[[File:Troxler effect.jpg|alt=Troxler effect|thumb|'''Figure | [[File:Troxler effect.jpg|alt=Troxler effect|thumb|'''Figure 3'''. Troxler effect - looking at this long enough causes it to disappear.]] | ||
Firmly fixating one's focus on a stationary object in the visual field can cause the surrounding visuals to appear to fade or slowly vanish. | Firmly fixating one's focus on a stationary object in the visual field can cause the surrounding visuals to appear to fade or slowly vanish ('''Figure 3'''). | ||
=== Effect === | === Effect === | ||