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Related Experiment Video

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Creating Objects and Object Categories for Studying Perception and Perceptual Learning
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Fast ensemble representations for abstract visual impressions.

Allison Yamanashi Leib1, Anna Kosovicheva2, David Whitney1

  • 1University of California Berkeley, Whitney Lab, 3210 Tolman Hall, Berkeley, California 94720, USA.

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|November 17, 2016
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Summary
This summary is machine-generated.

Perception of lifelikeness in objects, even crowds, is fast and reliable. This perception relies on summary statistics, not just object features, revealing insights into implicit visual processing.

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Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Computational Neuroscience

Background:

  • Richness of perception often relies on implicit information beyond basic image features.
  • Perception of lifelikeness is an inferential process, potentially cognitively demanding and serial.
  • Existing perceptual mechanisms may allow for rapid and reliable representation of lifelikeness.

Purpose of the Study:

  • To investigate the speed and reliability of perceiving lifelikeness.
  • To determine if lifelikeness can be perceived in crowds of objects.
  • To explore the role of summary statistical representations in visual perception.

Main Methods:

  • Human observers judged the lifelikeness of individual objects and crowds.
  • Judgments of crowd lifelikeness were compared to individual object lifelikeness ratings.
  • Statistical analyses were used to predict crowd percepts from individual object properties.

Main Results:

  • Observers demonstrated high sensitivity to the lifelikeness of both individual objects and crowds.
  • Percepts of crowd lifelikeness were accurately predicted by individual object lifelikeness judgments.
  • Summary statistical representations were shown to underlie perceptions of abstract visual dimensions.

Conclusions:

  • Perceptual mechanisms for lifelikeness are fast and reliable, extending to groups of objects.
  • Implicit visual information, conveyed by summary statistics, significantly contributes to rich perceptual experiences.
  • Lifelikeness perception is not solely dependent on image-level properties but involves inferential processes.