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The illusion can be reinforced even more if a concave face is lit from below, as this will reverse the shading cues, making them closer to those of a convex face lit from above. The Hollow-Face illusion has been used to study the dissociation between vision-for-perception and vision-for-action (see Two-streams hypothesis). [2]
The Hering illusion (1861): When two straight and parallel lines are presented in front of radial background (like the spokes of a bicycle), the lines appear as if they were bowed outwards. Hollow-Face illusion: The Hollow-Face illusion is an optical illusion in which the perception of a concave mask of a face appears as a normal convex face.
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Art historians say Leonardo da Vinci hid an optical illusion in the Mona Lisa's face: she doesn't always appear to be smiling. There's question as to whether it was intentional, but new research ...
Op art is a style of art that uses optical illusions to create an impression of movement, or hidden images and patterns. Trompe-l'œil uses realistic imagery to create the optical illusion that depicted objects exist in three dimensions.
An optical illusion is any illusion that deceives the human visual system into perceiving something that is not present or incorrectly perceiving what is present. Contents Top
There is no one better to tell the story of womenhood in Afghanistan than the women themselves
From ancient history to the modern day, the clitoris has been discredited, dismissed and deleted -- and women's pleasure has often been left out of the conversation entirely. Now, an underground art movement led by artist Sophia Wallace is emerging across the globe to challenge the lies, question the myths and rewrite the rules around sex and the female body.