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Related Experiment Video

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Methods for Presenting Real-world Objects Under Controlled Laboratory Conditions
06:54

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Published on: June 21, 2019

Canonical visual size for real-world objects.

Talia Konkle1, Aude Oliva

  • 1Department of Brain and Cognitive Sciences, 46-4078, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA. tkonkle@mit.edu

Journal of Experimental Psychology. Human Perception and Performance
|September 9, 2010
PubMed
Summary
This summary is machine-generated.

Objects maintain a consistent visual size in our minds, regardless of viewing distance. This "canonical visual size" relates to an object's real-world size and its surrounding space, not just its visual angle.

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Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Object Recognition

Background:

  • Objects are perceived at varying distances, leading to significant changes in visual angle.
  • Understanding how the brain represents object size despite this variability is crucial for visual cognition.

Purpose of the Study:

  • To investigate how internal object representations encode visual size information.
  • To determine if a consistent visual size is associated with real-world objects in mental representations.

Main Methods:

  • Experiments involved observers accessing existing knowledge about real-world objects.
  • Participants performed tasks requiring drawing, imagining, or preferentially viewing objects.

Main Results:

  • Objects were consistently drawn, imagined, and preferentially viewed at a specific visual size.
  • This canonical visual size is proportional to the logarithm of the object's real-world size.
  • Canonical visual size is better described by the object-to-frame ratio than a fixed visual angle.

Conclusions:

  • The concept of "canonical visual size" explains consistent mental representations of object size.
  • This finding extends the principle of canonical perspective to visual size representation.
  • Internal object representations utilize a size metric relative to the surrounding space.