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Related Concept Videos

Plastic Deformations01:14

Plastic Deformations

It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
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Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their original...
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Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation
06:53

Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation

Published on: March 1, 2017

Flashed face distortion effect: grotesque faces from relative spaces.

Jason M Tangen1, Sean C Murphy, Matthew B Thompson

  • 1School of Psychology, University of Queensland, St Lucia, QLD 4072, Australia. jtangen@psy.uq.edu.au

Perception
|September 3, 2011
PubMed
Summary
This summary is machine-generated.

Fast presentation of eye-aligned faces creates a novel distortion effect, making them appear caricatured or grotesque. This effect highlights facial features that deviate most from the norm, offering insights into face perception.

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Area of Science:

  • Psychology
  • Visual Perception
  • Cognitive Science

Background:

  • The human visual system is adept at processing faces, but the mechanisms underlying face perception and adaptation are complex.
  • Rapid visual stimuli can induce unique perceptual phenomena, influencing how we interpret visual information.

Purpose of the Study:

  • To introduce and describe a novel face distortion effect.
  • To investigate the influence of rapid, sequential presentation of eye-aligned faces on perceived facial characteristics.
  • To explore the potential of this effect for studying contrastive distortion and face adaptation.

Main Methods:

  • Utilizing a computer screen to present sequences of eye-aligned faces at a fast pace.
  • Observing and documenting the resulting perceptual distortions, including caricaturing and grotesque appearances.
  • Analyzing the relationship between the degree of distortion and the degree to which individual faces deviate from a set on specific dimensions.

Main Results:

  • A distinct face distortion effect was observed when faces were presented rapidly.
  • Faces appeared caricatured, with extreme deviations becoming exaggerated and some appearing grotesque.
  • The magnitude of distortion correlated with the degree of deviation from the average face in the set.

Conclusions:

  • Fast-paced presentation of eye-aligned faces induces a novel contrastive distortion effect.
  • This effect amplifies deviations, offering a new method to study face adaptation and perceptual contrast.
  • The findings contribute to understanding how the brain processes facial variations and adapts to visual input.