Thatcher effect - Wikipedia
The Thatcher effect or Thatcher illusion is a phenomenon where it becomes more difficult to detect local feature changes in an upside-down face, despite identical changes being obvious in an upright face. It is named after the then British prime minister Margaret Thatcher, on whose photograph the effect was first demonstrated.
Hollow-Face illusion - Wikipedia
The Hollow-Face illusion (also known as Hollow-Mask illusion) is an optical illusion in which the perception of a concave mask of a face appears as a normal convex face.
Facing This Way and That - Facial Illusions
2024年1月11日 · When the eyes, nose and mouth are inverted, we process the relationship between them differently, resulting in the illusion that the face appears narrower. Thus, humans possess the ability to recognize faces rapidly and with incredible accuracy. This skill develops during the first years of our lives, and is generally quite reliable, serving us ...
Orientation-sensitivity to facial features explains the Thatcher illusion
2014年10月9日 · The Thatcher illusion provides a compelling example of the perceptual cost of face inversion. The Thatcher illusion is often thought to result from a disruption to the processing of spatial relations between face features.
Thatcher Effect - Optical Illusion & Explaination
This is a great example of how the brain processes faces, and how it can be fooled by simple tricks. This effect was first documented by Peter Thompson in 1980 [1], and since then has spurred a series of experiments and studies on the topics of facial recognition and the brain’s ability to process faces.
Inversion produces opposite size illusions for faces and bodies
2018年11月1日 · We replicate a basic visual illusion - an inverted face is perceived as larger than a physically identical upright face. No such size illusion is observed for hands or everyday objects. A reverse size illusion is observed for bodies, so that …
Impact of Thatcher effect, Double Illusion and Inversion on face ...
In the Thatcher illusion, in which the eyes and mouth are inverted relative to the rest of the face, looks grotesque when shown upright but not when inverted. Face double illusion is formed by replicating the eyes and mouth below the originals.
Illusion of face
The right image is different from the left one, in which each of eyes and the mouth is inverted in the inverted face. Observers do not feel it bizarre so much, while it appears to be rather bizarre when the image is inverted and the face is upright (see below). This effect is called the Thatcher illusion (Thompson, 1980). Peter's page
Opposite size illusions for inverted faces and letters
2024年4月1日 · A size illusion has previously been demonstrated for faces, whereby an inverted face is perceived as larger than the same stimulus upright. Here, two experiments replicate the face size illusion, and investigate whether the illusion is also present for individual letters (Experiment 1), and visual words and pseudowords (Experiment 2).
Face illusions - 立命館大学
2012年2月12日 · The right image is different from the left one, in which each of eyes and the mouth is inverted in the inverted face. Observers do not feel it bizarre so much, while it appears to be rather bizarre when the image is inverted and the face is upright (see below). This effect is called the Thatcher illusion (Thompson, 1980). Peter's page.